作者：邓聪聪
1.到jdk官网上下载你想要的jdk版本
[root@test_server local]# ll total 155576 drwxr-xr-x. 2 root root 45 Mar 19 10:34 bin drwxr-xr-x. 3 root root 53 Mar 19 10:34 conf drwxr-xr-x. 3 root root 90 Mar 21 13:15 etc drwxr-xr-x. 3 root root 25 Jun 6 16:02 java -rw-r--r--. 1 root root 159019376 Jun 6 11:58 jdk-8u11-linux-x64.tar.gz drwxr-xr-x. 2 root root 27 Mar 19 10:34 sbin drwxr-xr-x. 5 root root 40 Mar 8 16:16 sersync drwxr-xr-x. 134 root bin 8192 Aug 8 2016 webmin -rw-r--r--. 1 root root 270871 Jan 16 14:22 zabbix_agents_3.2.0.linux2_6.amd64.tar.gz
2.解压文件到指定目录下
tar -xf jdk-8u11-linux-x64.tar.gz -C java/
3.配置jdk的全局环境变量
方式1： JAVA_HOME=/usr/local/java/jdk1.8.0_11 JRE_HOME=${JAVA_HOME}/jre CLASSPATH=$JAVA_HOME/lib:$JRE_HOME/lib PATH=$JAVA_HOME/bin:$PATH export PATH JAVA_HOME CLASSPATH JRE_HOME ---------------------------------------------------------------------- 方式2： export JAVA_HOME=/usr/local/java/jdk1.8.0_11 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH ---------------------------------------------------------------------- 引用配置 [root@test_server local]#. /etc/profile
4.验证安装的jdk
java -version