Centos7安装java8

1、下载安装

cd /usr/local
wget https://repo.huaweicloud.com/java/jdk/8u202-b08/jdk-8u202-linux-x64.tar.gz

 

2、解压

tar -zxvf jdk-8u202-linux-x64.tar.gz

我当前的目录

[root@localhost local]# cd jdk1.8.0_202/
[root@localhost jdk1.8.0_202]# pwd
/usr/local/jdk1.8.0_202

 

3、配置系统环境变量

vim /etc/profile

添加下面内容

#java
JAVA_HOME=/usr/local/jdk1.8.0_202
JRE_HOME=/usr/local/jdk1.8.0_202/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH

刷新配置

source /etc/profile

4、验证

[root@localhost local]# java -version
java version "1.8.0_202"
Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)