1、环境: MacOS

2、操作步骤

(1)打开终端,输入命令

$ /usr/libexec/java_home -V ,显示本地的 jdk 地址如下

Matching Java Virtual Machines (1):
    11.0.16.1, x86_64:	"Java SE 11.0.16.1"	/Library/Java/JavaVirtualMachines/jdk-11.0.16.1.jdk/Contents/Home

/Library/Java/JavaVirtualMachines/jdk-11.0.16.1.jdk/Contents/Home

(2)执行命令删除目录,将彻底删除本地安装的 jdk

$ cd /Library/Java/JavaVirtualMachines/

$ sudo rm -rf jdk-11.0.16.1.jdk/