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    Linux安装多个jdk版本进行切换

    栏目:Linux/apache问题 时间:2019-10-11 14:20

    本文为大家分享了Linux jdk安装多个版本切换的具体方法,供大家参考,具体内容如下

    1. 上传jdk7 和 jdk8 包

    2. 解压

    [root@localhost webapps]# tar -zxvf /package/jdk-7u80-linux-x64.tar.gz 
    

    3. 配置jdk变量

     vi /etc/profile
    
    export JAVA_HOME=/package/jdk1.7.0_80
    export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
    export PATH=$PATH:$JAVA_HOME/bin
    
    

    4. java -version

    5. 给jdk1.7设置序列号

    [xxx@localhost home]$ alternatives --install /usr/bin/java java /package/jdk1.7.0_80 3
    

    6. 安装jdk1.8

    [xxx@localhost home]$ alternatives --install /usr/bin/java java /package/jdk1.8.0_124 2
    

    7.选择jdk对应的数字--切换jdk版本

    [root@localhost ~]# java -version
    java version "1.7.0_80"
    Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
    Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)
    [root@localhost ~]# alternatives --config java
    
    There are 3 programs which provide 'java'.
    
     Selection  Command
    -----------------------------------------------
    * 1      /package/jdk1.8.0_121/java
      2      /package/jdk1.8.0_121/bin/java
     + 3      /package/jdk1.7.0_80/bin/java
    
    Enter to keep the current selection[+], or type selection number: 2
    [root@localhost ~]# java -version
    java version "1.8.0_121"
    Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
    Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
    
    

    以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持IIS7站长之家。