MAC 系统安装多版本JAVA

1、执行命令：查看多版本java安装目录

/usr/libexec/java_home -V

2、打开vim ~/.zshrc 3、将以下代码复制到文件中

JAVA_HOME_8=/Users/zhaohongfeng/Library/Java/JavaVirtualMachines/corretto-1.8.0_392/Contents/Home
JAVA_HOME_11=/Users/zhaohongfeng/Library/Java/JavaVirtualMachines/corretto-11.0.21/Contents/Home
JAVA_HOME_21=/Users/zhaohongfeng/Library/Java/JavaVirtualMachines/openjdk-21.0.2/Contents/Home

export JAVA_HOME=$JAVA_HOME_8
alias jdk8="export JAVA_HOME=$JAVA_HOME_8 && echo current JDK has switched to oracle jdk version 1.8. && java -version"
alias jdk11="export JAVA_HOME=$JAVA_HOME_11 && echo current JDK has switched to openjdk version 11. && java -version"
alias jdk21="export JAVA_HOME=$JAVA_HOME_21 && echo current JDK has switched to openjdk version 21. && java -version"

CLASS_PATH="$JAVA_HOME/lib"
PATH="$PATH:$JAVA_HOME/bin"

4、保存文件 5、执行命令：source ~/.zshrc

6、执行命令：java -version

7、通过执行命令切换不同版本

jdk8
jdk11
jdk21