服务器jre环境变量

vim /etc/profile

export JAVA_HOME=/usr/local/jdk1.8.0_201

export JRE_HOME=/usr/local/jdk1.8.0_201/jre

export CLASSPATH=$JRE_HOME/lib/rt.jar:$JRE_HOME/lib/ext

export PATH=$PATH:$JRE_HOME/bin

source /etc/profile