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Mac 安装与卸载Java

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安装

首先前往官方地址，下载所需版本的安装文件

安装后修改.zshrc

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export JAVA_8_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_321.jdk/Contents/Home
export JAVA_11_HOME=`/usr/libexec/java_home -v 11`
export JAVA_17_HOME=`/usr/libexec/java_home -v 17`
export JAVA_HOME=$JAVA_17_HOME
alias jdk8="export JAVA_HOME=$JAVA_8_HOME"
alias jdk11="export JAVA_HOME=$JAVA_11_HOME"
alias jdk17="export JAVA_HOME=$JAVA_17_HOME"

使用时，可动态切换java版本

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➜  ~ jdk8 && java -version
java version "1.8.0_321"
Java(TM) SE Runtime Environment (build 1.8.0_321-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.321-b07, mixed mode)
➜  ~ jdk11 && java --version
java 11.0.14 2022-01-18 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.14+8-LTS-263)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.14+8-LTS-263, mixed mode)
➜  ~ jdk17 && java --version
java 17.0.2 2022-01-18 LTS
Java(TM) SE Runtime Environment (build 17.0.2+8-LTS-86)
Java HotSpot(TM) 64-Bit Server VM (build 17.0.2+8-LTS-86, mixed mode, sharing)

卸载

首先，删除系统文件

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sudo rm -rf /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -rf /Library/PreferencesPanes/JavaControlPanel.prefPane
sudo rm -rf ~/Library/Application\ Support/Oracle/Java

然后，查找当前安装文件并删除即可

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ls /Library/Java/JavaVirtualMachines/ 
sudo rm -rf /Library/Java/JavaVirtualMachines/jdk1.8.0_321.jdk