"Thinkinginjava" 22, get the environment variable of the system

/*** book: "Thinking in Java" * Function: Get the environment variable of the system * File: environmentvariables.java* time: April 8, 2015 19:39:08* Author: 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.getva Lue ());}}}

My system environment variables are exposed, haha:

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 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

"Thinkinginjava" 22, get the environment variable of the system