【ThinkingInJava】22、得到系统的环境变量

/**
* 书本:《Thinking In Java》
* 功能:得到系统的环境变量
* 文件:EnvironmentVariables.java
* 时间:2015年4月8日19:39:08
* 作者:cutter_point
*/
package Lesson11holdingyourobjects;

import java.util.Map;

public class EnvironmentVariables
{
	public static void main(String [] args)
	{
		for(Map.Entry entry : System.getenv().entrySet())
		{
			System.out.println(entry.getKey() + " : " + entry.getValue());
		}
	}
}

我的系统环境变量暴露一下，哈哈：

USERPROFILE : C:\Users\feng

PATHEXT : .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC

JAVA_HOME : G:\Program Files\Java\jdk1.8.0_40

PROGRAMDATA : C:\ProgramData

PROGRAMFILES(X86) : C:\Program Files (x86)

TEMP : C:\Users\feng\AppData\Local\Temp

COMMONPROGRAMFILES : C:\Program Files\Common Files

HOMEDRIVE : C:

PROCESSOR_REVISION : 3c03

SYSTEMDRIVE : C:

USERDOMAIN : xiao

ALLUSERSPROFILE : C:\ProgramData

PROGRAMW6432 : C:\Program Files

COMMONPROGRAMFILES(X86) : C:\Program Files (x86)\Common Files

PROCESSOR_IDENTIFIER : Intel64 Family 6 Model 60 Stepping 3, GenuineIntel

SESSIONNAME : Console

TMP : C:\Users\feng\AppData\Local\Temp

PSMODULEPATH : C:\Windows\system32\WindowsPowerShell\v1.0\Modules\

CLASSPATH : .;G:\Program Files\Java\jdk1.8.0_40\lib\dt.jar;G:\Program Files\Java\jdk1.8.0_40\lib\tools.jar

LOGONSERVER : \\XIAO

PROCESSOR_ARCHITECTURE : AMD64

FP_NO_HOST_CHECK : NO

OS : Windows_NT

PATH : G:\MyEclipse Professional 2014\binary\com.sun.java.jdk7.win32.x86_64_1.7.0.u45\jre\bin;G:\Android\android-sdk-windows\tools;G:\php5.6;G:\php5.6\ext;G:\orcale\xiaofeng\product\12.1.0\dbhome_1\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;G:\Program
Files\Java\jdk1.8.0_40\bin;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\Microsoft
SQL Server\110\Tools\Binn\;C:\Program Files\MySQL\MySQL Enterprise Backup 3.11\;C:\Program Files (x86)\MySQL\MySQL Fabric 1.5.3 & MySQL Utilities 1.5.3 1.5\;C:\Program Files (x86)\MySQL\MySQL Fabric 1.5.3 & MySQL Utilities 1.5.3 1.5\Doctrine extensions for
PHP\

HOMEPATH : \Users\feng

PROMPT : $P$G

COMSPEC : C:\Windows\system32\cmd.exe

COMMONPROGRAMW6432 : C:\Program Files\Common Files

PROCESSOR_LEVEL : 6

USERDOMAIN_ROAMINGPROFILE : xiao

PROGRAMFILES : C:\Program Files

LOCALAPPDATA : C:\Users\feng\AppData\Local

VS120COMNTOOLS : G:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\Tools\

COMPUTERNAME : XIAO

NUMBER_OF_PROCESSORS : 8

USERNAME : xiaofeng

SYSTEMROOT : C:\Windows

PUBLIC : C:\Users\Public

WINDIR : C:\Windows

APPDATA : C:\Users\feng\AppData\Roaming