ubuntu 配置JDK环境

/etc/profile中加入以下代码 JAVA_HOME为JDK包解压的路径
export JAVA_HOME=/home/exayong/jvm/jdk1.8.0_111
export JRE_HOME=${JAVA_HOME}/jre  
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib  
export PATH=${JAVA_HOME}/bin:$PATH