tar -zxvf jdk-8u231-linux-x64.tar.gz
解压之后，配置环境变量
vim /etc/profile export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL export JAVA_HOME=/usr/java/jdk1.8.0_151 export ERLANG_HOME=/usr/local/erlang export PATH=$PATH:$JAVA_HOME/bin:$ERLANG_HOME/bin export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar 修改完成后, source /etc/profile 再查看 java -verion
