Linux安装多个jdk版本进行切换

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脚本之家。

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