本文為大家分享了Linux jdk安裝多個版本切換的具體方法，供大家參考，具體內容如下

1. 上傳jdk7 和 jdk8 包

2. 解壓

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

3. 配置jdk變量

　vi /etc/profileexport JAVA_HOME=/package/jdk1.7.0_80export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jarexport PATH=$PATH:$JAVA_HOME/bin

4. java -version

5. 給jdk1.7設置序列號

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

6. 安裝jdk1.8

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

7.選擇jdk對應的數字--切換jdk版本

[root@localhost ~]# java -versionjava 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 javaThere 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/javaEnter to keep the current selection[+], or type selection number: 2[root@localhost ~]# java -versionjava 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內容，希望對大家的學習有所幫助，也希望大家多多支持武林網之家。