jdk1.8安装

JDK1.8

linux下安装jdk1.8

解压：

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

软连接:

ln -s /data/jdk1.8.0_211 /data/jdk1.8

添加环境变量

vim  /etc/profile.d/jdk1.8.sh 

export JAVA_HOME=/data/jdk1.8
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

加载

source /etc/profile.d/jdk1.8.sh

验证

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)