### Download JDK1.8 from Oracle official Website
cd /usr/
mkdir java
### chmod 777 java
mv /home/abc/Downloads/jdk-8u211-linux-x64.tar.gz /usr/java/
cd /usr/java
tar -zxvf jdk-8u211-linux-x64.tar.gz
# 修改全局环境变量
vim /etc/profile
# 安装目录
export JAVA_HOME="/usr/java/jdk1.8.0_211"
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export JRE_HOME=$JAVA_HOME/jre
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
source /etc/profile
