一直做Web應用一般不會用到這些東西，今天在搞一個代碼生成器的東西，發現這個值得收藏：
java 代碼
- System.getProperty()參數大全
-
- java.version Java Runtime Environment version
- java.vendor Java Runtime Environment vendor
- java.vendor.url Java vendor URL
- java.home Java installation directory
- java.vm.specification.version Java Virtual Machine specification version
- java.vm.specification.vendor Java Virtual Machine specification vendor
- java.vm.specification.name Java Virtual Machine specification name
- java.vm.version Java Virtual Machine implementation version
- java.vm.vendor Java Virtual Machine implementation vendor
- java.vm.name Java Virtual Machine implementation name
- java.specification.version Java Runtime Environment specification version
- java.specification.vendor Java Runtime Environment specification vendor
- java.specification.name Java Runtime Environment specification name
- java.class.version Java class format version number
- java.class.path Java class path
- java.library.path List of paths to search when loading libraries
- java.io.tmpdir Default temp file path
- java.compiler Name of JIT compiler to use
- java.ext.dirs Path of extension directory or directories
- os.name Operating system name
- os.arch Operating system architecture
- os.version Operating system version
- file.separator File separator ("/" on UNIX)
- path.separator Path separator (":" on UNIX)
- line.separator Line separator ("\n" on UNIX)
- user.name User's account name
- user.home User's home directory
- user.dir User's current working directory
使用方法很簡單：
System.
getProperty("user.dir")