Linux 安装流程：jdk

    注意：JAVA_HOME=/devFile/jdk/jdk1.8.0_261  就是你自己的目录
    #java environment
    export JAVA_HOME=/usr/local/java/jdk1.8.0_261
    export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
    export PATH=$PATH:${JAVA_HOME}/bin
     
    #java environment
    export JAVA_HOME=/home/jdk/jdk1.8.0_261
    export CLASSPATH=$:CLASSPATH:$JAVA_HOME/li