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<p> <strong>前提准备：</strong></p>
<ol>
<li><a target="_blank" rel="noopener" href="https://www.aliyundrive.com/s/gEkuwTGPNXf">JDK安装包</a>(我使用的是JDK 11)</li>
</ol>
<hr>
<h1 id="二-配置Java环境"><a href="#二-配置Java环境" class="headerlink" title="二.配置Java环境"></a><code>二.配置Java环境</code></h1><ol>
<li><p><strong>安装JDK</strong></p>
<p>打开下载的<a target="_blank" rel="noopener" href="https://www.aliyundrive.com/s/gEkuwTGPNXf">JDK安装包</a>，自行选择路径安装，不要含有中文路径</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191329325.png" alt="image-20220719132857215"></p>
</li>
<li><p><strong>配置环境变量</strong></p>
</li>
</ol>
<p> 打开JDK安装的位置</p>
<p> <img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191331163.png" alt="image-20220719133159091"></p>
<p> 打开bin文件夹，并复制文件夹路径</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191332798.png" alt="image-20220719133245750"></p>
<p> 按<strong>Windows+Q</strong>，搜索<strong>编辑系统环境变量</strong>，并打开</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191334110.png" alt="image-20220719133424980"></p>
<p> 按图点击</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191335285.png" alt="image-20220719133550245"></p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191336254.png" alt="image-20220719133644195"></p>
<p> 选择新建，粘贴刚刚复制的bin文件夹的路径</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191339059.png" alt="image-20220719133927004"></p>
<ol start="3">
<li><p><strong>验证Java环境是否安装成功</strong></p>
<p>按<strong>Win+R</strong>，输入cmd打开命令行</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191342296.png" alt="image-20220719134227213"></p>
<p>在cmd中输入：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">java -version</span><br></pre></td></tr></table></figure>
<p>如果和图中的结果相同，则Java环境配置成功</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191344485.png" alt="image-20220719134415438"></p>
</li>
</ol>
<hr>
<h1 id="三-编写Java代码并编译运行"><a href="#三-编写Java代码并编译运行" class="headerlink" title="三. 编写Java代码并编译运行"></a><code>三. 编写Java代码并编译运行</code></h1><ol>
<li><p><strong>编写Java代码（此处可以使用Vscode等软件编写，我这里选择使用记事本）</strong></p>
<p><strong>新建文本文档，在记事本中写入代码</strong></p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191350294.png" alt="image-20220719135023189"></p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191349550.png" alt="image-20220719134900474"></p>
<p>将文件的后缀名改为.java</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191351708.png" alt="image-20220719135130681"></p>
</li>
<li><p><strong>编译源代码</strong></p>
<p>在地址栏中输入cmd，然后回车确认</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191352938.png" alt="image-20220719135220873"></p>
<p>在命令行中输入：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">javac + 文件名</span><br></pre></td></tr></table></figure>
<p>Java的源代码就被成功的编译为.class文件</p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191353219.png" alt="image-20220719135329150"></p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191354957.png" alt="image-20220719135441893"></p>
</li>
<li><p><strong>运行.class文件</strong></p>
<p>在cmd中输入：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">java + 生成的类名</span><br></pre></td></tr></table></figure>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191356595.png" alt="image-20220719135639518"></p>
<p><img src="https://testingcf.jsdelivr.net/gh/magic-H728/Store@master/blog-img/202207191358712.png" alt="image-20220719135812648"></p>
<p>代码成功的运行</p>
</li>
</ol>
<hr>
<h1 id="四-温馨提示"><a href="#四-温馨提示" class="headerlink" title="四.温馨提示"></a><code>四.温馨提示</code></h1><ol>
<li>JDK的下载尽量使用我的链接，官网下载需要科学上网</li>
<li>实际的Java代码编写中，使用记事本+命令行的方式并不方便，但是希望大家能熟悉命令行的使用</li>
<li>编辑环境变量的方式要熟悉，以后会经常使用</li>
<li>可能会安排Vscode编写Java代码的方法</li>
</ol>
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