Use of java's System Class

example:

System.out.println(System.getProperty("os.name"))

o/p= windows xp


Reference site : http://java.sun.com/j2se/1.5.0/docs/api/java/lang/System.html



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