Standard System Properties

Here are the properties that displayed on my system.

awt.toolkit=sun.awt.windows.WToolkit
file.encoding=Cp1252
file.encoding.pkg=sun.io
file.separator=\
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.awt.printerjob=sun.awt.windows.WPrinterJob
java.class.path=.;c:\classpath\com.fredswartz.utilities.jar;c:\classpath\TableLayout.jar;c:\classpath\swixml.jar;c:\classpath\jdom.jar;c:\classpath\pmd-1.8\lib\pmd-1.8.jar;C:\classpath\pmd-1.8\lib\jaxen-core-1.0-fcs.jar;C:\classpath\com.fredswartz.guiUtils.jar;C:\classpath\com.fredswartz.fmt-0.7.jar;C:\Program Files\IBM\Cloudscape_10.0\lib\derby.jar
java.class.version=49.0
java.endorsed.dirs=C:\Program Files\Java\jdk1.5.0_01\jre\lib\endorsed
java.ext.dirs=C:\Program Files\Java\jdk1.5.0_01\jre\lib\ext
java.home=C:\Program Files\Java\jdk1.5.0_01\jre
java.io.tmpdir=C:\DOCUME~1\Owner\LOCALS~1\Temp\
java.library.path=C:\Program Files\Java\jdk1.5.0_01\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\Python22;C:\Program Files\PC-Doctor for Windows\services;c:\ant\bin;c:\Program Files\Java\jdk\bin;c:\Program Files\Java\jdk\jre\javaws;C:\Program Files\Sybase\Adaptive Server Anywhere 6.0\win32;c:\classpath\jcsc/bin;c:\classpath\jcsc\bin;C:\Program Files\Microsoft Visual Studio\Common\Tools\WinNT;C:\Program Files\Microsoft Visual Studio\Common\MSDev98\Bin;C:\Program Files\Microsoft Visual Studio\Common\Tools;C:\Program Files\Microsoft Visual Studio\VC98\bin
java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition
java.runtime.version=1.5.0_01-b08
java.specification.name=Java Platform API Specification
java.specification.vendor=Sun Microsystems Inc.
java.specification.version=1.5
java.vendor=Sun Microsystems Inc.
java.vendor.url=http://java.sun.com/
java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi
java.version=1.5.0_01
java.vm.info=mixed mode, sharing
java.vm.name=Java HotSpot(TM) Client VM
java.vm.specification.name=Java Virtual Machine Specification
java.vm.specification.vendor=Sun Microsystems Inc.
java.vm.specification.version=1.0
java.vm.vendor=Sun Microsystems Inc.
java.vm.version=1.5.0_01-b08
line.separator=

os.arch=x86
os.name=Windows XP
os.version=5.1
path.separator=;
sun.arch.data.model=32
sun.boot.class.path=C:\Program Files\Java\jdk1.5.0_01\jre\lib\rt.jar;C:\Program Files\Java\jdk1.5.0_01\jre\lib\i18n.jar;C:\Program Files\Java\jdk1.5.0_01\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.5.0_01\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.5.0_01\jre\lib\jce.jar;C:\Program Files\Java\jdk1.5.0_01\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.5.0_01\jre\classes
sun.boot.library.path=C:\Program Files\Java\jdk1.5.0_01\jre\bin
sun.cpu.endian=little
sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86
sun.desktop=windows
sun.io.unicode.encoding=UnicodeLittle
sun.jnu.encoding=Cp1252
sun.management.compiler=HotSpot Client Compiler
sun.os.patch.level=Service Pack 2
user.country=US
user.dir=C:\0www-workingnotes\notes-java-working\io\30properties_and_preferences\40sysprops\SysPropList
user.home=C:\Documents and Settings\Owner
user.language=en
user.name=Owner
user.timezone=
user.variant=



Property Name 	Description 	Java Version

file.encoding 	The character encoding for the default locale 	1.1
file.encoding.pkg 	The package that contains the converters that handle converting between local encodings and Unicode 	1.1
file.separator 	The platform-dependent file separator (e.g., "/" on UNIX, "\" for Windows) 	1.0
java.class.path 	The value of the CLASSPATH environment variable 	1.0
java.class.version 	The version of the Java API 	1.0
java.compiler 	The just-in-time compiler to use, if any. The java interpreter provided with the JDK initializes this property from the environment variable JAVA_COMPILER. 	1.0
java.home 	The directory in which Java is installed 	1.0
java.io.tmpdir 	The directory in which java should create temporary files 	1.2
java.version 	The version of the Java interpreter 	1.0
java.vendor 	A vendor-specific string 	1.0
java.vendor.url 	A vendor URL 	1.0
line.separator 	The platform-dependent line separator (e.g., "\n" on UNIX, "\r\n" for Windows) 	1.0
os.name 	The name of the operating system 	1.0
os.arch 	The system architecture 	1.0
os.version 	The operating system version 	1.0
path.separator 	The platform-dependent path separator (e.g., ":" on UNIX, "," for Windows) 	1.0
user.dir 	The current working directory when the properties were initialized 	1.0
user.home 	The home directory of the current user 	1.0
user.language 	The two-letter language code of the default locale 	1.1
user.name 	The username of the current user 	1.0
user.region 	The two-letter country code of the default locale 	1.1
user.timezone 	The default time zone 	1.1
  

// File: io/properties/SysPropList.java
// Description: Shows system properties.  This must be an application.
//              An applet can't get this information.
// Author: Fred Swartz
// Date:   2 Feb 2005

import java.awt.*;
import javax.swing.*;
import java.util.*;

/** Generic main program. */
public class SysPropList {
    public static void main(String[] args) {
        JFrame window = new JFrame("System Properties");
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setContentPane(new SysPropListGUI());
        window.pack();
        window.setVisible(true);
    }
}

/** Panel to display the (limited) GUI intereface. */
class SysPropListGUI extends JPanel {
    JTextArea m_propertiesTA = new JTextArea(20, 40);

    /** Constructor sets layout, adds component(s), sets values*/
    public SysPropListGUI() {
        this.setLayout(new BorderLayout());
        this.add(new JScrollPane(m_propertiesTA), BorderLayout.CENTER);

        //... Add property list data to text area.
        Properties pr = System.getProperties();
        TreeSet propKeys = new TreeSet(pr.keySet());  // TreeSet sorts keys
        for (Iterator it = propKeys.iterator(); it.hasNext(); ) {
            String key = (String)it.next();
            m_propertiesTA.append("" + key + "=" + pr.get(key) + "\n");
        }
    }
}



代理
FtpProxySet=true|false 如果代理被用ftp链接 设置为treu
FtpProxyHost=主机名 被用于FTP链接的代理服务器的主机地址
FtpProxyPort=端口号 被用于FTP链接的指定主机名使用的端口

gopherProxySet=true|false 如果代理被用于Gopher链接设置为true
gopherProxyHost==主机名 被用于Gopher链接的代理服务器的主机地址
gopherProxyPort=端口号 被用于Gopher链接的指定主机名使用的端口

http.proxySet=true|false 如果代理被用户HTTP链接,则设为true
http.proxyHost==主机名 被用于HTTP链接的代理服务器的主机地址
http.proxyPort=端口号 被用于HTTP链接的指定主机名使用的端口
https.proxySet=true|false 如果代理被用户HTTPS链接,则设为true
https.proxyHost==主机名 被用于HTTPS链接的代理服务器的主机地址
https.proxyPort=端口号 被用于HTTPS链接的指定主机名使用的端口 



java -Ddemo=sadasdsad 設置參數 -Dos.name=sadjas改變參數