java1.5 액세스 환경 변수

예:

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

실행 결과:
C:\java>java    EnvTest OS Windows_NT
또한:

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()); 
   } 
  } 
} 

실행 결과:
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
C:\java>