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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
| 1 | [root@localhost webapps] # tar -zxvf /package/jdk-7u80-linux-x64.tar.gz |
3. 配置jdk变量
| 1 2 3 4 5 | 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
| 1 | [xxx@localhost home]$ alternatives -- install /usr/bin/java java /package/jdk1 .7.0_80 3 |
6. 安装jdk1.8
| 1 | [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
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | [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。
