查看 MAC JDK默认安装路径 JAVA路径 的shell 命令

$ /usr/libexec/java_home -V

Matching Java Virtual Machines (4):
    11.0.8, x86_64: "Java SE 11.0.8"    /Library/Java/JavaVirtualMachines/jdk-11.0.8.jdk/Contents/Home
    9, x86_64:  "Java SE 9" /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home
    1.8.0_40, x86_64:   "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_40/Contents/Home
    1.7.0_79, x86_64:   "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_79/Contents/Home

/Library/Java/JavaVirtualMachines/jdk-11.0.8.jdk/Contents/Home