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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></div> <a href="https://github.com/dunwu/linux-tutorial" target="_blank" rel="noopener noreferrer" class="repo-link">
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<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>JDK 安装</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/linux-tutorial/linux/soft/jdk-install.html#jdk-安装步骤" class="sidebar-link">JDK 安装步骤</a><ul class="sidebar-sub-headers"></ul></li><li><a href="/linux-tutorial/linux/soft/jdk-install.html#windows-系统安装方法" class="sidebar-link">Windows 系统安装方法</a><ul class="sidebar-sub-headers"></ul></li><li><a href="/linux-tutorial/linux/soft/jdk-install.html#linux-系统安装方法" class="sidebar-link">Linux 系统安装方法</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/linux-tutorial/linux/soft/jdk-install.html#redhat-发行版本使用-rpm-安装方法" class="sidebar-link">RedHat 发行版本使用 rpm 安装方法</a></li></ul></li><li><a href="/linux-tutorial/linux/soft/jdk-install.html#更多内容" class="sidebar-link">更多内容</a><ul class="sidebar-sub-headers"></ul></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="jdk-安装"><a href="#jdk-安装" class="header-anchor">#</a> JDK 安装</h1> <blockquote><p>关键词：JDK, JAVA_HOME, CLASSPATH, PATH</p></blockquote> <ul><li><a href="#jdk-%E5%AE%89%E8%A3%85%E6%AD%A5%E9%AA%A4">JDK 安装步骤</a></li> <li><a href="#windows-%E7%B3%BB%E7%BB%9F%E5%AE%89%E8%A3%85%E6%96%B9%E6%B3%95">Windows 系统安装方法</a></li> <li><a href="#linux-%E7%B3%BB%E7%BB%9F%E5%AE%89%E8%A3%85%E6%96%B9%E6%B3%95">Linux 系统安装方法</a> <ul><li><a href="#redhat-%E5%8F%91%E8%A1%8C%E7%89%88%E6%9C%AC%E4%BD%BF%E7%94%A8-rpm-%E5%AE%89%E8%A3%85%E6%96%B9%E6%B3%95">RedHat 发行版本使用 rpm 安装方法</a></li></ul></li> <li><a href="#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99">参考资料</a></li></ul> <h2 id="jdk-安装步骤"><a href="#jdk-安装步骤" class="header-anchor">#</a> JDK 安装步骤</h2> <p>JDK 安装步骤：</p> <p>（1）下载 JDK</p> <p>a. 进入 <a href="https://www.oracle.com/technetwork/java/javase/downloads/index.html" target="_blank" rel="noopener noreferrer">Java 官网下载页面<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>；</p> <p>b. 选择需要的版本：</p> <p><img src="https://raw.githubusercontent.com/dunwu/images/dev/snap/20180920181010164121.png" alt="img"></p> <p>c. 选择对应操作系统的安装包：</p> <p>Windows 系统选择 exe 安装包；Mac 系统选择 dmp 安装包；Linux 系统选择 tar.gz 压缩包（RedHat 发行版可以安装 rpm 包）。</p> <p><img src="https://raw.githubusercontent.com/dunwu/images/dev/snap/20180920181010164308.png" alt="img"></p> <p>（2）运行安装包，按提示逐步安装</p> <p>（3）配置系统环境变量：<code>JAVA_HOME</code>, <code>CLASSPATH</code>, <code>PATH</code></p> <p>（4）验证 Java 是否安装成功</p> <h2 id="windows-系统安装方法"><a href="#windows-系统安装方法" class="header-anchor">#</a> Windows 系统安装方法</h2> <p>（1）下载 JDK</p> <p>需<EFBFBD>
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</code></pre></div><p>（3）配置系统环境变量</p> <p>执行 <code>/etc/profile</code> 命令，添加以下内容：</p> <div class="language-bash extra-class"><pre class="language-bash"><code><span class="token comment"># JDK 的根路径</span>
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<span class="token builtin class-name">export</span> <span class="token assign-left variable">JAVA_HOME</span><span class="token operator">=</span>/opt/java/jdk1.8.0_162
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<span class="token builtin class-name">export</span> <span class="token assign-left variable">CLASSPATH</span><span class="token operator">=</span><span class="token variable">$CLASSPATH</span><span class="token builtin class-name">:</span><span class="token variable">$JAVA_HOME</span>/lib:<span class="token variable">$JAVA_HOME</span>/jre/lib
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<span class="token builtin class-name">export</span> <span class="token assign-left variable"><span class="token environment constant">PATH</span></span><span class="token operator">=</span><span class="token variable">$JAVA_HOME</span>/bin:<span class="token variable">$JAVA_HOME</span>/jre/bin:<span class="token environment constant">$PATH</span>
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</code></pre></div><p>执行 <code>source /etc/profile</code> ，立即生效</p> <p>（4）验证 Java 是否安装成功</p> <p>执行 <code>java -version</code> 命令，验证安装是否成功。</p> <h3 id="redhat-发行版本使用-rpm-安装方法"><a href="#redhat-发行版本使用-rpm-安装方法" class="header-anchor">#</a> RedHat 发行版本使用 rpm 安装方法</h3> <p>（1）下载 JDK</p> <p>下载 rpm 安装包</p> <p>（2）选择一个合适的版本安装</p> <div class="language-bash extra-class"><pre class="language-bash"><code>$ <span class="token function">rpm</span> -ivh jdk-8u181-linux-x64.rpm
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</code></pre></div><p>安装成功后，默认安装路径在 <code>/usr/local</code> 下：</p> <p>（3）设置环境变量，同压缩包安装。</p> <p>（4）检验是否安装成功，执行 <code>java -version</code> 命令</p> <h2 id="更多内容"><a href="#更多内容" class="header-anchor">#</a> 更多内容</h2> <ul><li><strong>引申</strong> <ul><li><a href="https://github.com/dunwu/OS" target="_blank" rel="noopener noreferrer">操作系统、运维部署总结系列<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul></li> <li><strong>引用</strong></li> <li>http://www.runoob.com/java/java-environment-setup.html</li> <li>https://blog.csdn.net/deliciousion/article/details/78046007</li></ul></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/dunwu/linux-tutorial/edit/master/docs/linux/soft/jdk-install.md" target="_blank" rel="noopener noreferrer">帮助我们改善此页面！</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">上次更新:</span> <span class="time">19 minutes ago</span></div></footer> <!----> </main></div><div class="global-ui"><!----><!----></div></div>
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