java1.5中訪問環境變量

2019-11-26 15:45:41

字體：大中小

來源：轉載

供稿：網友

如：

public class EnvTest { 
  public static void main(String args[]) { 
    System.out.println(System.getenv(args[0])); 
  } 
} 

運行結果：

C:/java>java EnvTest OS
Windows_NT

又如：

復制代碼代碼如下:

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

運行結果：

C:/java>java EnvDump
PROCESSOR_ARCHITECTURE=x86
LOGONSERVER=//ZZ3Z100
HOMEDRIVE=C:
HOMEPATH=/Documents and Settings/Owner.LEGEND-A7R5PDTM
SESSIONNAME=Console
TMP=C:/DOCUME~1/OWNER~1.LEG/LOCALS~1/Temp
java_home=c:/jdk1.5
windir=C:/WINDOWS
ant_home=c:/ant1.6
PROCESSOR_IDENTIFIER=x86 Family 15 Model 2 Stepping 4, GenuineIntel
SystemDrive=C:
USERPROFILE=C:/Documents and Settings/Owner.LEGEND-A7R5PDTM
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
CommonProgramFiles=C:/Program Files/Common Files
NUMBER_OF_PROCESSORS=1
ComSpec=C:/WINDOWS/system32/cmd.exe
COMPUTERNAME=ZZ3Z100
OS=Windows_NT
USERNAME=Owner
CLIENTNAME=Console
=ExitCode=00000000
TEMP=C:/DOCUME~1/OWNER~1.LEG/LOCALS~1/Temp
USERDOMAIN=ZZ3Z100
ALLUSERSPROFILE=C:/Documents and Settings/All Users.WINDOWS
PROCESSOR_LEVEL=15
SystemRoot=C:/WINDOWS
classpath=c:/jdk1.5/lib;c:/java
=C:=C:/java
APPDATA=C:/Documents and Settings/Owner.LEGEND-A7R5PDTM/Application Data
Path=C:/WINDOWS/system32;C:/WINDOWS;C:/WINDOWS/System32/Wbem;
c:/jdk1.5/bin;c:/ant1.6/bin
PROMPT=$P$G
PROCESSOR_REVISION=0204
ProgramFiles=C:/Program Files