[code lang="java"]import java.util.*;

public class scjp {
public static void main(String[] args) {
Properties p = System.getProperties();
Enumeration<?> names = p.propertyNames();
while(names.hasMoreElements()) {
String name = (String)names.nextElement();
System.out.println(name + " = " + System.getProperty(name));
}
}
}[/code]

執行結果如下
[code]java.runtime.name = Java(TM) SE Runtime Environment
sun.boot.library.path = C:Program FilesJavajre6bin
java.vm.version = 19.1-b02
java.vm.vendor = Sun Microsystems Inc.
java.vendor.url = http://java.sun.com/
path.separator = ;
java.vm.name = Java HotSpot(TM) 64-Bit Server VM
file.encoding.pkg = sun.io
user.country = TW
sun.java.launcher = SUN_STANDARD
sun.os.patch.level = Service Pack 1
java.vm.specification.name = Java Virtual Machine Specification
user.dir = C:Userslienfaworkspacescjp
java.runtime.version = 1.6.0_24-b07
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs = C:Program FilesJavajre6libendorsed
os.arch = amd64
java.io.tmpdir = H:TEMPAppDataLocalTemp
line.separator =

java.vm.specification.vendor = Sun Microsystems Inc.
user.variant =
os.name = Windows 7
sun.jnu.encoding = MS950
java.library.path = C:Program FilesJavajre6bin;.;C:WindowsSunJavabin;C:Windowssystem32;C:Windows;C:Program FilesCommon FilesMicrosoft SharedWindows Live;C:Program Files (x86)Common FilesMicrosoft SharedWindows Live;C:Windowssystem32;C:Windows;C:WindowsSystem32Wbem;C:WindowsSystem32WindowsPowerShellv1.0;C:Program Files (x86)Microsoft SQL Server80ToolsBinn;C:Program FilesMicrosoft SQL Server90Toolsbinn;C:Program Files (x86)Microsoft SQL Server90Toolsbinn;C:Program Files (x86)Microsoft SQL Server90DTSBinn;C:Program Files (x86)Microsoft SQL Server90ToolsBinnVSShellCommon7IDE;C:Program Files (x86)Microsoft Visual Studio 8Common7IDEPrivateAssemblies;C:Program FilesMicrosoft SQL Server90DTSBinn;C:Program Files (x86)Windows LiveShared;C:Program FilesTortoiseSVNbin;;"F:ZendZendServerbin";"F:ZendZendServershareZendFrameworkbin";C:Program Files (x86)Microsoft ASP.NETASP.NET Web Pagesv1.0
java.specification.name = Java Platform API Specification
java.class.version = 50.0
sun.management.compiler = HotSpot 64-Bit Server Compiler
os.version = 6.1
user.home = C:Userslienfa
user.timezone =
java.awt.printerjob = sun.awt.windows.WPrinterJob
file.encoding = MS950
java.specification.version = 1.6
user.name = lienfa
java.class.path = C:Userslienfaworkspacescjpbin
java.vm.specification.version = 1.0
sun.arch.data.model = 64
java.home = C:Program FilesJavajre6
java.specification.vendor = Sun Microsystems Inc.
user.language = zh
awt.toolkit = sun.awt.windows.WToolkit
java.vm.info = mixed mode
java.version = 1.6.0_24
java.ext.dirs = C:Program FilesJavajre6libext;C:WindowsSunJavalibext
sun.boot.class.path = C:Program FilesJavajre6libresources.jar;C:Program FilesJavajre6librt.jar;C:Program FilesJavajre6libsunrsasign.jar;C:Program FilesJavajre6libjsse.jar;C:Program FilesJavajre6libjce.jar;C:Program FilesJavajre6libcharsets.jar;C:Program FilesJavajre6libmodulesjdk.boot.jar;C:Program FilesJavajre6classes
java.vendor = Sun Microsystems Inc.
file.separator =
java.vendor.url.bug = http://java.sun.com/cgi-bin/bugreport.cgi
sun.cpu.endian = little
sun.io.unicode.encoding = UnicodeLittle
sun.desktop = windows
sun.cpu.isalist = amd64[/code]