java System.getProperty()可以获取的值，

java System.getProperty()可以获取的值，

1.java.version Java Runtime Environment version

2.java.vendor Java Runtime Environment vendor

3.java.vendor.url Java vendor URL

4.java.home Java installation directory

5.java.vm.specification.version Java Virtual Machine specification version

6.java.vm.specification.vendor Java Virtual Machine specification vendor

7.java.vm.specification.name Java Virtual Machine specification name

8.java.vm.version Java Virtual Machine implementation version

9.java.vm.vendor Java Virtual Machine implementation vendor

10.java.vm.name Java Virtual Machine implementation name

11.java.specification.version Java Runtime Environment specification version

12.java.specification.vendor Java Runtime Environment specification vendor

13.java.specification.name Java Runtime Environment specification name

14.java.class.version Java class format version number

15.java.class.path Java class path

16.java.library.path List of paths to search when loading libraries

17.java.io.tmpdir Default temp file path

18.java.compiler Name of JIT compiler to use

19.java.ext.dirs Path of extension directory or directories

20.os.name Operating system name

21.os.arch Operating system architecture

22.os.version Operating system version

23.file.separator File separator ("/" on UNIX)

24.path.separator Path separator (":" on UNIX)

25.line.separator Line separator ("\n" on UNIX)

26.user.name User's account name

27.user.home User's home directory

28.user.dir User's current working directory