Centos7源碼安裝jdk8

1. 下載下傳jdk  : jdk-8u211-linux-x64.tar.gz

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

2.解壓

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

sudo mv jdk1.8.0_211 /opt/

4、配置環境 sudo vi  /etc/profile，在最後添加

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   運作：source /etc/profile   ，然後java -version 檢視

[[email protected] jdk1.8.0_211]$ sudo vi /etc/profile
[[email protected] jdk1.8.0_211]$ source /etc/profile
[[email protected] jdk1.8.0_211]$ java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)
[[email protected] jdk1.8.0_211]$