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      <title>Linux配置Java环境变量</title>
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      <pubDate>Fri, 28 Jan 2022 12:00:00 +0000</pubDate>
      
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      <description>1. 下载JDK JDK最新下载地址:
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
2. 安装JDK   将 jdk-8u171-linux-x64.tar.gz 文件上传至linux服务器
  解压缩tar.gz文件 tar -xzvf jdk-8u171-linux-x64.tar.gz 
  环境变量的设置 vi /etc/profile  在最后加入以下几行： JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el7_5.x86_64 （JDK安装目录） JRE_HOME=$JAVA_HOME/jre CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin export JAVA_HOME JRE_HOME CLASS_PATH PATH 
  使环境变量立即生效命令 source /etc/profile 
  3. 测试JDK是否安装成功  查看安装版本 java -version openjdk version &amp;#34;1.8.0_171&amp;#34; OpenJDK Runtime Environment (build 1.8.0_171-b10) OpenJDK 64-Bit Server VM (build 25.171-b10, mixed mode)  查看安装目录 java -verbose   </description>
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