环境变量及其获取方法

1.获取方法

java 代码

Properties p = System.getProperties();
               Enumeration e = p.propertyNames();
               int i= 1;
               while(e.hasMoreElements()) {
                       String sName = (String)e.nextElement();
                       String sValue = System.getProperty(sName);
                       System.out.println("["+(i++)+"]"+sName+":"+sValue);
               }

2.常用变量明细:

[1]java.runtime.name:Java(TM) 2 Runtime Environment, Standard Edition
[2]sun.boot.library.path:C:\Program Files\Java\j2re1.4.2_11\bin
[3]java.vm.version:1.4.2_11-b06
[4]java.vm.vendor:Sun Microsystems Inc.
[5]java.vendor.url:http://java.sun.com/
[6]path.separator:;
[7]java.vm.name:Java HotSpot(TM) Client VM
[8]file.encoding.pkg:sun.io
[9]user.country:CN
[10]sun.os.patch.level:Service Pack 4
[11]java.vm.specification.name:Java Virtual Machine Specification
[12]user.dir:E:\1_javaspace\all_project\test
[13]java.runtime.version:1.4.2_11-b06
[14]java.awt.graphicsenv:sun.awt.Win32GraphicsEnvironment
[15]java.endorsed.dirs:C:\Program Files\Java\j2re1.4.2_11\lib\endorsed
[16]os.arch:x86
[17]java.io.tmpdir:C:\DOCUME~1\CHENYI~1\LOCALS~1\Temp\
[18]line.separator:

[19]java.vm.specification.vendor:Sun Microsystems Inc.
[20]user.variant:
[21]os.name:Windows 2000
[22]sun.java2d.fontpath:
[23]java.library.path:C:\Program Files\Java\j2re1.4.2_11\bin;.;C:\WINNT\system32;C:\WINNT;D:\oracle\ora92\jre\1.4.2\bin\client;D:\oracle\ora92\jre\1.4.2\bin;D:\oracle\ora92\bin;D:\Program Files\Borland\Delphi7\Bin;D:\Program Files\Borland\Delphi7\Projects\Bpl\;C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\KAV6;C:\j2sdk1.4.2_11\bin;
[24]java.specification.name:Java Platform API Specification
[25]java.class.version:48.0
[26]java.util.prefs.PreferencesFactory:java.util.prefs.WindowsPreferencesFactory
[27]os.version:5.0
[28]user.home:C:\Documents and Settings\chenyifei
[29]user.timezone:
[30]java.awt.printerjob:sun.awt.windows.WPrinterJob
[31]file.encoding:GBK
[32]java.specification.version:1.4
[33]user.name:yangzhh
[34]java.class.path:E:\1_javaspace\all_project\test;E:\1_javaspace\all_project\v_weblogic\common_lib\weblogic8.1.2.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\classes12.jar;E:\Tomcat 5.5\common\lib\servlet-api.jar;E:\1_javaspace\all_project\v_resin\common_lib\xercesImpl.jar;E:\1_javaspace\all_project\v_zhuhai\bin;E:\1_javaspace\all_project\v_weblogic\common_lib\classes12.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\cos.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\gdca-app.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\jcommon-0.8.7.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\jfreechart-0.9.2.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\psi-app.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\weblogic8.1.2.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\xalan.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\xercesImpl.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\xercesSamples.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\xml-apis.jar;E:\1_javaspace\all_project\v_weblogic\common_lib\xmlParserAPIs.jar;E:\1_javaspace\all_project\v_weblogic\common_lib
[35]java.vm.specification.version:1.0
[36]sun.arch.data.model:32
[37]java.home:C:\Program Files\Java\j2re1.4.2_11
[38]java.specification.vendor:Sun Microsystems Inc.
[39]user.language:zh
[40]awt.toolkit:sun.awt.windows.WToolkit
[41]java.vm.info:mixed mode
[42]java.version:1.4.2_11
[43]java.ext.dirs:C:\Program Files\Java\j2re1.4.2_11\lib\ext
[44]sun.boot.class.path:C:\Program Files\Java\j2re1.4.2_11\lib\rt.jar;C:\Program Files\Java\j2re1.4.2_11\lib\i18n.jar;C:\Program Files\Java\j2re1.4.2_11\lib\sunrsasign.jar;C:\Program Files\Java\j2re1.4.2_11\lib\jsse.jar;C:\Program Files\Java\j2re1.4.2_11\lib\jce.jar;C:\Program Files\Java\j2re1.4.2_11\lib\charsets.jar;C:\Program Files\Java\j2re1.4.2_11\classes
[45]java.vendor:Sun Microsystems Inc.
[46]file.separator:\
[47]java.vendor.url.bug:http://java.sun.com/cgi-bin/bugreport.cgi
[48]sun.cpu.endian:little
[49]sun.io.unicode.encoding:UnicodeLittle
[50]sun.cpu.isalist:pentium i486 i386

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