java中的system.getproperty(String key)信息
星期五, 2011-12-30 | Author: Lee | JAVA-and-J2EE | 4,650 views
经常可以在程序中看到别人用System.getProperty(“user.dir”);这种信息,其实这个并不什么都是系统自带的属性;
可以查看java API 里 System 这个类里 getProperties 方法下有这样的说明:
Description of Associated Value
java.version | Java Runtime Environment version |
java.vendor | Java Runtime Environment vendor |
java.vendor.url | Java vendor URL |
java.home | Java installation directory |
java.vm.specification.version | Java Virtual Machine specification version |
java.vm.specification.vendor | Java Virtual Machine specification vendor |
java.vm.specification.name | Java Virtual Machine specification name |
java.vm.version | Java Virtual Machine implementation version |
java.vm.vendor | Java Virtual Machine implementation vendor |
java.vm.name | Java Virtual Machine implementation name |
java.specification.version | Java Runtime Environment specification version |
java.specification.vendor | Java Runtime Environment specification vendor |
java.specification.name | Java Runtime Environment specification name |
java.class.version | Java class format version number |
java.class.path | Java class path |
java.library.path | List of paths to search when loading libraries |
java.io.tmpdir | Default temp file path |
java.compiler | Name of JIT compiler to use |
java.ext.dirs | Path of extension directory or directories |
os.name | Operating system name |
os.arch | Operating system architecture |
os.version | Operating system version |
file.separator | File separator ("/" on UNIX) |
path.separator | Path separator (":" on UNIX) |
line.separator | Line separator ("\n" on UNIX) |
user.name | User’s account name |
user.home | User’s home directory |
user.dir | User’s current working directory |
Multiple paths in a system property value are separated by the path separator character of the platform.
你可以自己执行代码查看:会比api多一些的
package com.liyz.test;
import java.util.Properties;
public class TestPro {
/**
* @param args
*/
public static void main(String[] args) {
System.out.println(System.getProperty(“user.dir”));
Properties pro = System.getProperties();
for (Object o : pro.keySet()) {
System.out.print(o+” ===>”);
System.out.println(pro.get(o));
}
}
}
结果:
F:\workspace\test
java.runtime.name ===>Java(TM) SE Runtime Environment
sun.boot.library.path ===>C:\Program Files\Java\jdk1.6.0_06\jre\bin
java.vm.version ===>10.0-b22
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
sun.java.launcher ===>SUN_STANDARD
user.country ===>CN
sun.os.patch.level ===>
java.vm.specification.name ===>Java Virtual Machine Specification
user.dir ===>F:\workspace\test
java.runtime.version ===>1.6.0_06-b02
java.awt.graphicsenv ===>sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs ===>C:\Program Files\Java\jdk1.6.0_06\jre\lib\endorsed
os.arch ===>x86
java.io.tmpdir ===>C:\Users\no\AppData\Local\Temp\
line.separator ===>
java.vm.specification.vendor ===>Sun Microsystems Inc.
user.variant ===>
os.name ===>Windows Vista
sun.jnu.encoding ===>GBK
java.library.path ===>C:\Program Files\Java\jdk1.6.0_06\bin;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jdk1.6.0_06/bin/../jre/bin/client;C:/Program Files/Java/jdk1.6.0_06/bin/../jre/bin;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Users\no\Desktop\dex2jar-0.0.7.8-SNAPSHOT\dex2jar-0.0.7.8-SNAPSHOT;C:\Program Files\Java\jdk1.6.0_06\bin;C:\Program Files\Oracle\jre\1.1.8\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;F:\soft\MySQLTools\MySqlServer\bin;F:\SecureCRT\Client\;C:\Program Files\Windows Live\Shared;C:\Program Files\Common Files\Thunder Network\KanKan\Codecs;C:\Program Files\QuickTime\QTSystem\;D:\tools\apache-maven-3.0.3\bin;C:\Program Files\Java\jdk1.6.0_06\bin;C:\Program Files\proXPN\bin;E:\maven\apache-maven-3.0.3\bin
java.specification.name ===>Java Platform API Specification
java.class.version ===>50.0
sun.management.compiler ===>HotSpot Client Compiler
os.version ===>6.1
user.home ===>C:\Users\no
user.timezone ===>
java.awt.printerjob ===>sun.awt.windows.WPrinterJob
file.encoding ===>UTF-8
java.specification.version ===>1.6
java.class.path ===>F:\workspace\test\bin;F:\mvnLib\dom4j-2.0.0-ALPHA-2.jar;F:\libxdjplug\commons-beanutils-1.6.jar;F:\libxdjplug\commons-collections.jar;F:\libxdjplug\commons-logging-1.0.4.jar;F:\libxdjplug\commons-logging-api-1.1.jar;F:\poolsLib\htmlparser-1.5.jar;F:\poolsLib\commons-digester-1.8.jar;F:\poolsLib\commons.codec-1.3.0.jar;F:\libxdjplug\commons-lang-2.4.jar;F:\libxdjplug\jxcell.jar;F:\libxdjplug\mysql-connector-java-5.1.10-bin.jar
user.name ===>no
java.vm.specification.version ===>1.0
java.home ===>C:\Program Files\Java\jdk1.6.0_06\jre
sun.arch.data.model ===>32
user.language ===>zh
java.specification.vendor ===>Sun Microsystems Inc.
awt.toolkit ===>sun.awt.windows.WToolkit
java.vm.info ===>mixed mode, sharing
java.version ===>1.6.0_06
java.ext.dirs ===>C:\Program Files\Java\jdk1.6.0_06\jre\lib\ext;C:\Windows\Sun\Java\lib\ext
sun.boot.class.path ===>C:\Program Files\Java\jdk1.6.0_06\jre\lib\resources.jar;C:\Program Files\Java\jdk1.6.0_06\jre\lib\rt.jar;C:\Program Files\Java\jdk1.6.0_06\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.6.0_06\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.6.0_06\jre\lib\jce.jar;C:\Program Files\Java\jdk1.6.0_06\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.6.0_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 ===>
文章作者: Lee
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