mac安装多个jdk版本

1.去官网下载jdk
/usr/libexec/java_home -V 命令查看当前jdk版本

2./Library/Java/JavaVirtualMachines在目录下找到装到的多个jdk

3.打开bash_profile文件
open -e .bash_profile
输入以下路径

java

export JAVA_8_HOME=“/Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk/Contents/Home”
export JAVA_10_HOME=“/Library/Java/JavaVirtualMachines/jdk-10.0.1.jdk/Contents/Home”
alias jdk8=“export JAVA_HOME=KaTeX parse error: Double subscript at position 7: JAVA_8_̲HOME" alias jdk…JAVA_10_HOME”

export JAVA_HOME=KaTeX parse error: Double subscript at position 7: JAVA_8_̲HOME export PAT…JAVA_HOME:$PATH"
保存
命令行输入：source ~/.bash_profile，生效

4控制台输入jdk8或者jdk10就会自动切换

java -version 查看jdk版本

5.删除jdk信息
输入
sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -fr /Library/PreferencesPanes/JavaControlPanel.prefpane

查找当前版本
输入：ls /Library/Java/JavaVirtualMachines/
输出：jdk1.8.0_181.jdk

sudo rm -rf /Library/Java/JavaVirtualMachines/jdk1.8.0_181.jdk