To see java system's properties

Properties pro = System.getProperties();
        Set<Object> keys = pro.keySet();
        
        Iterator<Object> kit = keys.iterator();
        while(kit.hasNext()){
        	Object knext = kit.next();
        	System.out.print(knext.toString()+" = ");
        	System.out.println((pro.getProperty(knext.toString())));
        }

results in my own machine:

java.runtime.name = Java(TM) 2 Runtime Environment, Standard Edition
sun.boot.library.path = C:\Program Files\Java\jdk1.5.0_06\jre\bin
java.vm.version = 1.5.0_06-b05
java.vm.vendor = Sun Microsystems Inc.
java.vendor.url = http://java.sun.com/
path.separator = ;
java.vm.name = Java HotSpot(TM) Client VM
file.encoding.pkg = sun.io
user.country = US
sun.os.patch.level =
java.vm.specification.name = Java Virtual Machine Specification
user.dir = D:\workspace\Test\src
java.runtime.version = 1.5.0_06-b05
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs = C:\Program Files\Java\jdk1.5.0_06\jre\lib\endorsed
os.arch = x86
java.io.tmpdir = C:\Users\MANTIS~1\AppData\Local\Temp\
line.separator =

java.vm.specification.vendor = Sun Microsystems Inc.
user.variant =
os.name = Windows NT (unknown)
sun.jnu.encoding = Cp1252
java.library.path = C:\Program Files\Java\jdk1.5.0_06\bin;.;C:\Windows\system32;C:\Windows;C:\Program Files\Java\jdk1.5.0_06\bin;C:\oracle\product\10.1.0\db_1\jre\1.4.2\bin;C:\oracle\product\10.1.0\db_1\bin;C:\oracle\product\10.1.0\db_1\jre\1.4.2\bin\client;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\CA\SharedComponents\ScanEngine;C:\Program Files\CA\SharedComponents\CAUpdate\;C:\Program Files\CA\SharedComponents\ThirdParty\;C:\Program Files\CA\SharedComponents\SubscriptionLicense\;C:\Program Files\CA\eTrustITM;c:\Program Files\Microsoft SQL Server\90\Tools\binn\;c:\Program Files\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\PrivateAssemblies\
java.specification.name = Java Platform API Specification
java.class.version = 49.0
sun.management.compiler = HotSpot Client Compiler
os.version = 6.1
user.home = C:\Users\Mantis_Bian
user.timezone =
java.awt.printerjob = sun.awt.windows.WPrinterJob
file.encoding = Cp1252
java.specification.version = 1.5
java.class.path = .
user.name = Mantis_Bian
java.vm.specification.version = 1.0
java.home = C:\Program Files\Java\jdk1.5.0_06\jre
sun.arch.data.model = 32
user.language = en
java.specification.vendor = Sun Microsystems Inc.
awt.toolkit = sun.awt.windows.WToolkit
java.vm.info = mixed mode, sharing
java.version = 1.5.0_06
java.ext.dirs = C:\Program Files\Java\jdk1.5.0_06\jre\lib\ext
sun.boot.class.path = C:\Program Files\Java\jdk1.5.0_06\jre\lib\rt.jar;C:\Program Files\Java\jdk1.5.0_06\jre\lib\i18n.jar;C:\Program Files\Java\jdk1.5.0_06\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.5.0_06\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.5.0_06\jre\lib\jce.jar;C:\Program Files\Java\jdk1.5.0_06\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.5.0_06\jre\classes
java.vendor = Sun Microsystems Inc.
file.separator = \
java.vendor.url.bug = http://java.sun.com/cgi-bin/bugreport.cgi
sun.io.unicode.encoding = UnicodeLittle
sun.cpu.endian = little
sun.desktop = windows
sun.cpu.isalist = pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86