JVM 有哪些系统属性？

import java.util.Enumeration;

import java.util.Properties;

public class HelloWorld001 {

    public static void main(String[] args) {

        Properties ps = System.getProperties();

        for (@SuppressWarnings("unchecked")

        Enumeration<String> e = (Enumeration<String>) ps.propertyNames(); e

                .hasMoreElements();) {

            String key = e.nextElement();

            System.out.println(key + " = " + ps.getProperty(key));

        }

    }

}

java.runtime.name = Java(TM) SE Runtime Environment

sun.boot.library.path = C:\Program Files\Java\jre7\bin

java.vm.version = 21.1-b02

java.vm.vendor = Oracle Corporation

java.vendor.url = http://java.oracle.com/

path.separator = ;

java.vm.name = Java HotSpot(TM) Client VM

file.encoding.pkg = sun.io

user.script =

user.country = CN

sun.java.launcher = SUN_STANDARD

sun.os.patch.level = Service Pack 3

java.vm.specification.name = Java Virtual Machine Specification

user.dir = C:\Documents and Settings\iridium\My Documents\eclipse_jee_workspace\helloworld

java.runtime.version = 1.7.0_01-b08

java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment

java.endorsed.dirs = C:\Program Files\Java\jre7\lib\endorsed

os.arch = x86

java.io.tmpdir = C:\DOCUME~1\iridium\LOCALS~1\Temp\

line.separator =

java.vm.specification.vendor = Oracle Corporation

user.variant =

os.name = Windows XP

sun.jnu.encoding = GB18030

java.library.path = C:\Program Files\Java\jre7\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/Java/jre7/bin/client;C:/Program Files/Java/jre7/bin;C:/Program Files/Java/jre7/lib/i386;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\MySQL\MySQL Server 5.5\bin;C:\Program Files\TortoiseHg\;C:\Program Files\TortoiseSVN\bin;C:\Program Files\ICBCEbankTools\Gemplus\GemSafe Libraries\BIN\;C:\Program Files\eclipse-jee-indigo-SR1-win32\eclipse;;.

java.specification.name = Java Platform API Specification

java.class.version = 51.0

sun.management.compiler = HotSpot Client Compiler

os.version = 5.1

user.home = C:\Documents and Settings\iridium

user.timezone =

java.awt.printerjob = sun.awt.windows.WPrinterJob

file.encoding = GB18030

java.specification.version = 1.7

user.name = iridium

java.class.path = C:\Documents and Settings\iridium\My Documents\eclipse_jee_workspace\helloworld\bin

java.vm.specification.version = 1.7

sun.arch.data.model = 32

java.home = C:\Program Files\Java\jre7

sun.java.command = HelloWorld001

java.specification.vendor = Oracle Corporation

user.language = zh

awt.toolkit = sun.awt.windows.WToolkit

java.vm.info = mixed mode, sharing

java.version = 1.7.0_01

java.ext.dirs = C:\Program Files\Java\jre7\lib\ext;C:\WINDOWS\Sun\Java\lib\ext

sun.boot.class.path = C:\Program Files\Java\jre7\lib\resources.jar;C:\Program Files\Java\jre7\lib\rt.jar;C:\Program Files\Java\jre7\lib\sunrsasign.jar;C:\Program Files\Java\jre7\lib\jsse.jar;C:\Program Files\Java\jre7\lib\jce.jar;C:\Program Files\Java\jre7\lib\charsets.jar;C:\Program Files\Java\jre7\classes

java.vendor = Oracle Corporation

file.separator = \

java.vendor.url.bug = http://bugreport.sun.com/bugreport/

sun.cpu.endian = little

sun.io.unicode.encoding = UnicodeLittle

sun.desktop = windows

sun.cpu.isalist =

java.runtime.name = OpenJDK Runtime Environment

sun.boot.library.path = /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64

java.vm.version = 23.25-b01

java.vm.vendor = Sun Microsystems Inc.

java.vendor.url = http://java.sun.com/

path.separator = :

java.vm.name = OpenJDK 64-Bit Server VM

file.encoding.pkg = sun.io

user.country = CN

sun.java.launcher = SUN_STANDARD

sun.os.patch.level = unknown

java.vm.specification.name = Java Virtual Machine Specification

user.dir = /home/iridium/eclipse/workspace/helloworld

java.runtime.version = 1.6.0_32-b32

java.awt.graphicsenv = sun.awt.X11GraphicsEnvironment

java.endorsed.dirs = /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/endorsed

os.arch = amd64

java.io.tmpdir = /tmp

line.separator =

java.vm.specification.vendor = Sun Microsystems Inc.

os.name = Linux

sun.jnu.encoding = UTF-8

java.library.path = /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/server:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64:/usr/lib/jvm/java-6-openjdk-amd64/jre/../lib/amd64:/usr/java/packages/lib/amd64:/usr/lib/jni:/lib:/usr/lib

java.specification.name = Java Platform API Specification

java.class.version = 50.0

sun.management.compiler = HotSpot 64-Bit Tiered Compilers

os.version = 3.2.0-4-amd64

user.home = /home/iridium

user.timezone =

java.awt.printerjob = sun.print.PSPrinterJob

file.encoding = UTF-8

java.specification.version = 1.6

user.name = iridium

java.class.path = /home/iridium/eclipse/workspace/helloworld/bin:/home/iridium/Downloads/netty-4.0.24.Final/jar/all-in-one/netty-all-4.0.24.Final.jar

java.vm.specification.version = 1.0

sun.arch.data.model = 64

java.home = /usr/lib/jvm/java-6-openjdk-amd64/jre

sun.java.command = HelloWorld001

java.specification.vendor = Sun Microsystems Inc.

user.language = zh

java.vm.info = mixed mode

java.version = 1.6.0_32

java.ext.dirs = /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/ext:/usr/java/packages/lib/ext

sun.boot.class.path = /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/resources.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/rt.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/sunrsasign.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/jsse.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/jce.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/charsets.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/jfr.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/netx.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/plugin.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/rhino.jar:/usr/lib/jvm/java-6-openjdk-amd64/jre/classes

java.vendor = Sun Microsystems Inc.

java.awt.headless = true

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 = gnome

sun.cpu.isalist =