linux安装jdk环境

1.  mkdir -p /usr/local/java


2.  tar -zvxf jdk-8u131-linux-x64.tar.gz -C /usr/local/java


3.  vim /etc/profile


4.  export JAVA_HOME=/usr/local/java/jdk1.8.0_131/
    export CLASSPATH=.:%JAVA_HOME%/lib/dt.jar:%JAVA_HOME%/lib/tools.jar
    export PATH=$PATH:$JAVA_HOME/bin


5.  source /etc/profile

6.  java -version