详细讲解Java运算符（总结分享）
<p><span style="font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; font-size: 14px; background-color: rgb(255, 255, 255);">本篇文章给大家带来了关于</span><a href="https://www.php.cn/course/list/36.html" target="_blank" style="margin: 0px; padding: 0px; color: rgb(61, 167, 13); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; font-size: 14px; white-space: normal; background-color: rgb(255, 255, 255); text-decoration-line: none !important;">java</a><span style="font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; font-size: 14px; background-color: rgb(255, 255, 255);">的相关知识，其中主要介绍了关于java运算符的相关问题，包括了算术运算符、关系运算符、逻辑运算符等等，希望对大家有帮助。</span></p><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><br/></p><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"></p><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">推荐学习：《<a href="https://www.php.cn/course/list/36.html" target="_blank" style="margin: 0px; padding: 0px; color: rgb(61, 167, 13); text-decoration-line: none !important;">java教程</a>》</p><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">一、算术运算符</h2><table class="wcn_c_table" ><thead style="margin: 0px; padding: 0px;"><tr class="firstRow" style="margin: 0px; padding: 0px;"><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">运算符</th><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">含义</th></tr></thead><tbody style="margin: 0px; padding: 0px;"><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">+</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">求和</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">-</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">相减</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">*</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">乘积</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">/</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">商</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">%</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">求余数（求模）</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">++</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">自加一</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">–</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">自减一</td></tr></tbody></table><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1. ++运算符</h2><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.1 ++在变量前</h3><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px; color: red;"><strong style="margin: 0px; padding: 0px;">当++出现在变量前，会<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">先自加一</code>，在做赋值运算</strong></span></p><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="719"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int x = 100;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int y = ++x;</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">步骤： ② ①</code></p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(x); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 101</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(y); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 101</code></p></td></tr></tbody></table><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.2 ++在变量后</h3><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px; color: red;"><strong style="margin: 0px; padding: 0px;">当++出现在变量后，会<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">先做赋值运算</code>，再自加1</strong></span></p><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="719"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int m = 20;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int n = m++;</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">步骤： ① ②</code></p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(n); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 20</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(m); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 21</code></p></td></tr></tbody></table><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.3 特别地，在print中</h3><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">6</p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">7</p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">8</p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">9</p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">10</p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">11</p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">12</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="712"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int c = 90;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(c++); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 传，这个“传”在这里有一个隐形的赋值运算。90</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 把上面代码拆解开</code></p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//int temp = c++;</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//System.out.println(temp);</code></p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"> </p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"> </p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int d = 80;</code></p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(++d); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//81</code></p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 拆解</code></p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//int temp2 = ++d;</code></p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//System.out.println(temp2);</code></p></td></tr></tbody></table><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">2. --运算符（例子同++运算符）</h2><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">2.1 --在变量前</h3><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px; color: red;"><strong style="margin: 0px; padding: 0px;">当–出现在变量前，会<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">先自减一</code>，在做赋值运算</strong></span></p><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">2.2 --在变量后</h3><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px; color: red;"><strong style="margin: 0px; padding: 0px;">当–出现在变量后，会<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">先做赋值运算</code>，再自减1</strong></span></p><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px;"><strong style="margin: 0px; padding: 0px;">注意:</strong></span><br style="margin: 0px; padding: 0px;"/>对于++运算符来说：<br style="margin: 0px; padding: 0px;"/>1.可以出现在变量前，也可以出现在变量后。<br style="margin: 0px; padding: 0px;"/>2.不管出现在变量前还是后，总之++执行结束之后，变量的值一定会自加1。</p><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">二、关系运算符</h2><table class="wcn_c_table" ><thead style="margin: 0px; padding: 0px;"><tr class="firstRow" style="margin: 0px; padding: 0px;"><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">运算符</th><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">含义</th></tr></thead><tbody style="margin: 0px; padding: 0px;"><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">></td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">大于</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">>=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">大于等于</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">小于</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);"><=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">小于等于</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">==</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">等于</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">!=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">不等于</td></tr></tbody></table><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px;"><strong style="margin: 0px; padding: 0px;">注意</strong></span>：所有的关系运算符的运算结果都是布尔类型，不是true就是false，不可能是其他值。</p><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">三、逻辑运算符</h2><table class="wcn_c_table" ><thead style="margin: 0px; padding: 0px;"><tr class="firstRow" style="margin: 0px; padding: 0px;"><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">运算符</th><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">含义</th><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">结果</th></tr></thead><tbody style="margin: 0px; padding: 0px;"><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">&</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">逻辑与（可以翻译成并且）</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">两边都是true，结果才是true</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">│</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">逻辑或（可以翻译成或者）</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">有一边是true，结果就是true</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">!</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">逻辑非（取反）</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">!true = false、!false = true</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">&&</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">短路与</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">两边都是true，结果才是true</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">││</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">短路或</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">有一边是true，结果就是true</td></tr></tbody></table><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.短路与 &&</h2><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.1短路与&& 和 逻辑与 &有什么区别？</h3><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">首先这两个运算符的运算结果没有任何区别，完全相同。<br style="margin: 0px; padding: 0px;"/>只不过“短路与&&”会发生<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">短路</code>现象。</p><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">6</p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">7</p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">8</p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">9</p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">10</p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">11</p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">12</p><p class="line number13 index12 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">13</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="712"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int x = 10;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int y = 11;</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(x > y & x > y++); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//false</code></p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 通过这个测试得出：x > y++ 这个表达式执行了。</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(y); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 12</code></p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"> </p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//测试短路与&&</code></p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int m = 10;</code></p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int n = 11;</code></p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 使用短路与&&的时候，当左边的表达式为false的时候，右边的表达式不执行</code></p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 这种现象被称为短路。</code></p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(m > n && m > n++);</code></p><p class="line number13 index12 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(n); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 11</code></p></td></tr></tbody></table><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.2什么是短路现象呢？</h3><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">右边表达式不执行，这种现象叫做短路现象。</p><h3 style="margin: 0px; padding: 0px; font-weight: 400; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.3什么时候使用&&，什么时候使用& ？</h3><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">从效率方面来说，&&比&的效率高一些。<br style="margin: 0px; padding: 0px;"/>因为逻辑与&不管第一个表达式结果是什么，第二个表达式一定会执行。</p><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">以后的开发中，短路与&&和逻辑与还是需要同时并存的。<br style="margin: 0px; padding: 0px;"/>大部分情况下都建议使用短路与&&只有当既需要左边表达式执行，又需要右边表达式执行的时候，才会选择逻辑与&。</p><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">2.短路或 ||</h2><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px;">跟短路与类似</strong></p><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">6</p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">7</p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">8</p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">9</p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">10</p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">11</p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">12</p><p class="line number13 index12 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">13</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="712"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int x = 10;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int y = 11;</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(x < y | x > y++); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//teur</code></p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 通过这个测试得出：x > y++ 这个表达式执行了。</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(y); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 12</code></p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"> </p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//测试短路或||</code></p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int m = 10;</code></p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int n = 11;</code></p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 使用短路或||的时候，当左边的表达式为true的时候，右边的表达式不执行</code></p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 这种现象被称为短路。</code></p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(m < n || m > n++);</code></p><p class="line number13 index12 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(n); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 11</code></p></td></tr></tbody></table><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">3.总结</h2><ol style="padding: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; font-size: 14px; white-space: normal; background-color: rgb(255, 255, 255);" class=" list-paddingleft-2"><li><p><strong style="margin: 0px; padding: 0px;">使用短路与 && 的时候，当左边的表达式为<code style="margin: 0px; padding: 2px 4px; font-size: 12.6px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">false</code>的时候，右边的表达式不执行</strong></p></li><li><p><strong style="margin: 0px; padding: 0px;">使用短路或 || 的时候当左边的表达式结果是<code style="margin: 0px; padding: 2px 4px; font-size: 12.6px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">true</code>的时候，右边的表达式不执行</strong></p></li></ol><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px;"><strong style="margin: 0px; padding: 0px;">注意</strong></span>：逻辑运算符两边要求都是布尔类型，并且最终的运算结果也是布尔类型。</p><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">四、赋值运算符</h2><table class="wcn_c_table" ><thead style="margin: 0px; padding: 0px;"><tr class="firstRow" style="margin: 0px; padding: 0px;"><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">运算符</th><th style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); border-top-width: 1px; border-top-color: rgb(221, 221, 221); background-color: rgb(233, 236, 239);">含义</th></tr></thead><tbody style="margin: 0px; padding: 0px;"><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">赋值</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">+=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">加等（原先的基础上加上/追加这个数）</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">-=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">减等（同理）</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">*=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">乘等（同理）</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">/=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">除等（同理）</td></tr><tr style="margin: 0px; padding: 0px;"><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">%=</td><td style="margin: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);">模等（同理）</td></tr></tbody></table><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">注：除了第一个是赋值运算符，其他都死拓展赋值运算符！！</p><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px; color: red;">很重要的语法机制：</span></h2><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="margin: 0px; padding: 0px; color: red;"><strong style="margin: 0px; padding: 0px;">使用<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">扩展赋值运算符</code>的时候，永远都<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">不会改变</code>运算结果类型。</strong></span></p><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">6</p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">7</p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">8</p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">9</p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">10</p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">11</p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">12</p><p class="line number13 index12 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">13</p><p class="line number14 index13 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">14</p><p class="line number15 index14 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">15</p><p class="line number16 index15 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">16</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="712"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int m = 10;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">m += 10; 类似于 m = m + 1;------->注意是类似！！！！</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"> </p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">实际不同：</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">i = i + 10; 和 i += 10;一样吗？</code></p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">byte i = 10;</code></p><p class="line number7 index6 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code> </p><p class="line number8 index7 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">i += 10;----->没报错</code></p><p class="line number9 index8 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">其实 x += 1 等同于：x = (byte)(x + 1);</code></p><p class="line number10 index9 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"> </p><p class="line number11 index10 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">i = i + 10;---->错误: 不兼容的类型: 从int转换到byte可能会有损失</code></p><p class="line number12 index11 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">编译器检测到x + 1是int类型，int类型不可以直接赋值给byte类型的变量x！</code></p><p class="line number13 index12 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">详见Java类型转换的时候需要遵循的规则第六点</code></p><p class="line number14 index13 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code> </p><p class="line number15 index14 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">i += 190; </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// i = (byte)(i + 190);</code></p><p class="line number16 index15 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(i); </code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 44 （当然会自动损失精度了。）</code></p></td></tr></tbody></table><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">五、条件运算符</h2><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.语法格式：（三目运算符。）</h2><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="719"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">布尔表达式 ? 表达式1 : 表达式2</code></p></td></tr></tbody></table><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">2.执行原理是什么？</h2><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">布尔表达式的结果为<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">true</code>时，<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">表达式1</code>的执行结果作为整个表达式的结果。<br style="margin: 0px; padding: 0px;"/>布尔表达式的结果为<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">false</code>时，<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">表达式2</code>的执行结果作为整个表达式的结果。</p><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px;">好玩点</strong>：</p><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">6</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="719"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">char a = true ? </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">男</code> <code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">: </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">女</code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">string a1 = true ? </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">男</code> <code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">: </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">女</code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">;</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">以上两个都报错。 </code></p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//下面可以</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">String s = </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"></code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">;</code></p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php spaces" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> </code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">s += true ? </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">男</code> <code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">: </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">女</code><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">;</code></p></td></tr></tbody></table><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">六、字符串连接运算符(+)</h2><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">1.+ 运算符在java语言中有两个作用。</h2><ol style="padding: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; font-size: 14px; white-space: normal; background-color: rgb(255, 255, 255);" class=" list-paddingleft-2"><li><p>作用1：<strong style="margin: 0px; padding: 0px;"><code style="margin: 0px; padding: 2px 4px; font-size: 12.6px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">求和</code></strong></p></li><li><p>作用2：<strong style="margin: 0px; padding: 0px;"><code style="margin: 0px; padding: 2px 4px; font-size: 12.6px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">字符串拼接</code></strong></p></li></ol><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">2.什么时候求和？什么时候进行字符串的拼接呢？</h2><ul style="padding: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; font-size: 14px; white-space: normal; background-color: rgb(255, 255, 255);" class=" list-paddingleft-2"><li><p>当 + 运算符两边都是<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">数字类型</code>的时候，求和。</p></li><li><p>当 + 运算符两边的“<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">任意一边</code>”是<code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">字符串类型</code>，那么这个+会进行字符串拼接操作。</p></li></ul><h2 style="margin: 0px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">3.一定要记住：字符串拼接完之后的结果还是一个字符串。</h2><table class="wcn_c_table" cellpadding="0" cellspacing="0" width="760"><tbody style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><tr style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;" class="firstRow"><td class="gutter" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px !important; border-radius: 4px 0px 0px 4px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important; color: rgb(175, 175, 175) !important; user-select: none !important;" width="NaN"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">1</p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">2</p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">3</p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">4</p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">5</p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 0.5em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important; text-align: right !important;">6</p></td><td class="code" style="-webkit-tap-highlight-color: rgba(0, 0, 0, 0); word-break: break-all; margin: 0px !important; border-radius: 0px !important; background: none !important; inset: auto !important; float: none !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; box-sizing: content-box !important; min-height: auto !important;" width="719"><p class="line number1 index0 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int a = 100;</code></p><p class="line number2 index1 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int b = 200;</code></p><p class="line number3 index2 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">// 这里的 + 两边都是数字，所以加法运算</code></p><p class="line number4 index3 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">int c = a + b;</code></p><p class="line number5 index4 alt2" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(a + </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">+</code> <code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">+ b + </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> = </code> <code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">+ a + b);</code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//100+200=100200</code></p><p class="line number6 index5 alt1" style="margin-top: 15px; margin-bottom: 15px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); line-height: 1.5em; border-radius: 8px; font-size: 16px; color: rgb(61, 70, 77); box-sizing: border-box; padding-right: 1em !important; padding-left: 1em !important; border-left: 3px solid rgb(67, 90, 95) !important; white-space: pre-wrap !important;"><code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">System.out.println(a + </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">+</code> <code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">+ b + </code><code class="php string" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"> = </code> <code class="php plain" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">+ (a + b));</code><code class="php comments" style="padding: 2px 4px; font-size: 13px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px; font-family: Monaco, Menlo, Consolas, Courier New, monospace; margin: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; inset: auto !important; float: none !important; line-height: 1.5em !important; outline: 0px !important; overflow: visible !important; position: static !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">//100+200=300</code></p></td></tr></tbody></table><p style="margin-top: 15px; margin-bottom: 15px; padding: 0px 0px 0px 10px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); color: rgb(61, 70, 77); box-sizing: border-box; border-radius: 8px; font-family: Helvetica Neue, Helvetica, PingFang SC, 微软雅黑, Tahoma, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px;">注</strong>：遵循“<strong style="margin: 0px; padding: 0px;"><code style="margin: 0px; padding: 2px 4px; font-size: 14.4px; color: rgb(199, 37, 78); background-color: rgb(249, 242, 244); border-radius: 4px;">自左向右</code></strong>”的顺序依次执行。（除非额外添加了小括号，小括号的优先级高）</p><p><br/></p><link rel="stylesheet" href="//www.zhidianyun.cn/source/plugin/wcn_editor/public/wcn_editor_fit.css?v134_TZ8" id="wcn_editor_css"/>
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