Centos7源码安装jdk

1. 下载jdk  : jdk-8u211-linux-x64.tar.gz

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

2.解压

tar -zxvf jdk-8u211-linux-x64.tar.gz

sudo mv jdk1.8.0_211 /opt/

4、配置环境 sudo vi  /etc/profile，在最后添加

export JAVA_HOME=/opt/jdk1.8.0_211
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

5、生效配置   运行：source /etc/profile   ，然后java -version 查看

[smile@MiWiFi-R3-srv jdk1..0_211]$ sudo vi /etc/profile
[smile@MiWiFi-R3-srv jdk1..0_211]$ source /etc/profile
[smile@MiWiFi-R3-srv jdk1..0_211]$ java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) -Bit Server VM (build 25.211-b12, mixed mode)
[smile@MiWiFi-R3-srv jdk1..0_211]$ 

至此 OK