1.下载JDK.binjava
2.运行./JDK.binbash
3.移动JDK目录到/usr/local/code
4.编辑环境变量io
vi /etc/profile export JAVA_HOME=/usr/local/JDK export PATH=$JAVA_HOME/bin:$PATH
5.更新环境变量class
source /etc/profile
6.查看JDK变量
java -version