MacOS查看JDK版本或卸载

java -version 
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)

 /usr/libexec/java_home -V
 # 输出
 Matching Java Virtual Machines (5):
21.0.1 (x86_64) "Oracle Corporation" - "Java SE 21.0.1" /Library/Java/JavaVirtualMachines/jdk-21.jdk/Contents/Home
17.0.9 (x86_64) "Oracle Corporation" - "Java SE 17.0.9" /Library/Java/JavaVirtualMachines/jdk-17.jdk/Contents/Home
11.0.21 (x86_64) "Oracle Corporation" - "Java SE 11.0.21" /Library/Java/JavaVirtualMachines/jdk-11.jdk/Contents/Home
1.8.211.12 (x86_64) "Oracle Corporation" - "Java" /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
1.8.0_211 (x86_64) "Oracle Corporation" - "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_211.jdk/Contents/Home

# 进入指定目录
cd /Library/Java/JavaVirtualMachines
# 删除
sudo rm -rf <要删除的目录>