安装jdk8-linux版

• 下载jdk

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

• 安装

rpm -ivh jdk-8u151-linux-x64.rpm

• 设置环境变量：vim /etc/profile.d/java.sh

#!/bin/bash
export JAVA_HOME=/usr/java/jdk1.8.0_151/
export PATH=$JAVA_HOME/bin:$PATH

• 生效

chmod +x /etc/profile.d/java.sh
source /etc/profile.d/java.sh