ubuntu 16.04 配置java环境变量

1. http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

根据系统环境选择下载JavaSE  

我这里是 linux x64  tar

2.解压     解压后  mv  jdk1.8.0_144  /opt/Java/jdk1.8.0_144

3.   vi ~/.bashrc

end ....  add.....

export JAVA_HOME=/opt/Java/jdk1.8.0_144
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

:wq

source  ~/.bashrc