一、下载JDK rpm包
前往JDK下载页面
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
二、把JDK rpm包传到Centos7上并执行安装
1 yum install jdk-8u191-linux-x64.rpm
三、配置环境变量,JAVA_HOME,
1 创建文件并编辑内容 2 vim /etc/profile.d/jdk.sh 3 4 export JAVA_HOME=/usr/jave/default 5 export PATH=$PATH:$JAVA_HOME/bin
四、生效环境变量
1 [root@molson ~]# . /etc/profile.d/jdk.sh
五、验证是否安装成功
1 [root@molson ~]# java -version 2 java version "1.8.0_191" 3 Java(TM) SE Runtime Environment (build 1.8.0_191-b12) 4 Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)