wufan0023

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