centos7安装jdk1.8

1、JDK下载地址：
http://www.oracle.com/technetwork/java/javase/downloads/index.html

https://www.oracle.com/java/technologies/downloads/#java8
下载你自己需要的版本

 

2、解压文件

tar -xzvf jdk-8u333-linux-x64.tar.gz

 

3、移动到/usr/local/jdk1.8下

mv jdk1.8.0_333 /usr/local/jdk

 

4、配置环境变量

vim /etc/profile

export JAVA_HOME=/usr/local/jdk1.8
export CLASSPATH=.:%JAVA_HOME%/lib/dt.jar:%JAVA_HOME%/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

 

5、验证是否安装成功

[root@localhost ~]# java -version
java version "1.8.0_333"
Java(TM) SE Runtime Environment (build 1.8.0_333-b02)
Java HotSpot(TM) 64-Bit Server VM (build 25.333-b02, mixed mode)
[root@localhost ~]#