JDK

1、官网下载指定版本并安装……省略

2、vi ～/.zshrc
同时要检查 bash_profile 是否存在。

if [ -f ~/.bash_profile ] ; then
    source ~/.bash_profile
fi

JAVA_HOME_11=/Library/Java/JavaVirtualMachines/jdk-11.0.15.1.jdk/Contents/Home

export JAVA_HOME=$JAVA_HOME_11

3、配置多个不同版本的 JDK
4、配置不同的地址、同时声明jdk8/11/17，可以通过这样的别称来直接快速地切换 jdk 版本。

# JDK Config
JAVA_HOME_8=/Library/Java/JavaVirtualMachines/jdk-1.8.jdk/Contents/Home
JAVA_HOME_11=/Library/Java/JavaVirtualMachines/jdk-11.jdk/Contents/Home
JAVA_HOME_17=/Library/Java/JavaVirtualMachines/jdk-17.0.2.jdk/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=$JAVA_HOME_11 && echo current JDK has switched to openjdk version 11. && java -version"
alias jdk17="export JAVA_HOME=$JAVA_HOME_17 && echo current JDK has switched to openjdk version 17. && java -version"
 
CLASS_PATH="$JAVA_HOME/lib"
PATH="$PATH:$JAVA_HOME/bin"