部署java环境
jdk下载
https://www.oracle.com/java/technologies/javase-jdk16-downloads.html
安装
rpm -ivh jdk-16_linux-x64_bin.rpm
环境变量配置
vim /etc/profile
# 添加环境变量
export JAVA_HOME=/usr/java/jdk-16
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JRE_HOME=$JAVA_HOME/jre