centos6.9安装jdk

一、下载jdk，解压并保存在/home/program/jdk1.8.0_181。解压命令：tar -zxvf jdk-8u181-linux-x64.tar.gz

二、vim /etc/profile

export JAVA_HOME=/home/program/jdk1.8.0_181
export JRE_HOME=$JAVA_HOME/jre
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=./:$JAVA_HOME/lib:$JAVA_HOME/jre/lib

三、source /etc/profile