1.准备
wget http://download.oracle.com/otn-pub/java/jdk/8u111-b14/jdk-8u111-linux-x64.tar.gz //下载JDK
tar -xzvf jdk-11-linux-x64.tar.gz //解压包
2.配置环境变量
在/etc/porfile下的export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL配置
JAVA_HOME=/usr/java/jdk1.8.0_111
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
3.验证
source /etc/porfile
java
javac