[Linux]Ubuntu安装Java详细教程
<p>环境：Ubuntu16.04 桌面版虚拟机</p><p>1、下载安装包：jdk-8u231-linux-x64.tar.gz</p>
<p> 链接: https://pan.baidu.com/s/1mmtzKejL1Fd_RQA6ZNb45w 提取码: 34ar</p>
<p> </p>
<p>2、将安装包放到/opt文件夹下</p>
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<pre>sudo cp ~/jdk-8u231-linux-x64.tar.gz /opt</pre>
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<p> </p>
<p>3、在/opt文件夹下创建java文件夹，将文件夹权限更改为当前用户</p>
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<pre>work@ubuntu:/<span style="color: rgba(0, 0, 0, 1)">opt$ <strong>sudo mkdir java</strong>
work@ubuntu:</span>/<span style="color: rgba(0, 0, 0, 1)">opt$ <strong>sudo chown work java</strong>
work@ubuntu:</span>/opt$ <strong>sudo chgrp work java</strong></pre>
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<p>4、解压安装包到/opt/java文件夹下</p>
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<pre>tar -zxvf jdk-8u231-linux-x64.tar.gz -C /opt/java/</pre>
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<p> </p>
<p>5、配置Java环境变量</p>
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<pre><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 修改/etc/profile文件</span>
sudo vim /etc/<span style="color: rgba(0, 0, 0, 1)">profile
</span><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 追加信息</span>
export JAVA_HOME=/opt/java/jdk1.8<span style="color: rgba(0, 0, 0, 1)">.0_231
export PATH</span>=${JAVA_HOME}/bin:${PATH}</pre>
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<p>6、使Java环境生效</p>
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<pre>source /etc/profile</pre>
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<p>7、查看是否安装成功</p>
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<pre><span style="color: rgba(0, 128, 0, 1)">#</span><span style="color: rgba(0, 128, 0, 1)"> 控制台执行javac或java -version命令</span>
javac/java -version</pre>
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来源：https://www.cnblogs.com/ttkl/p/11933884.html
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