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import java.util.Iterator;
import java.util.Properties;
public class sysEnv {
 
 public static void main(String args[])
 {
  Properties props=System.getProperties();
  Iterator iter=props.keySet().iterator();
  while(iter.hasNext())
  {
  String key=(String)iter.next();
  System.out.println(key+" = "+ props.get(key));
  }
 }
}
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 java.runtime.name = Java(TM) 2 Runtime Environment, Standard Edition
 sun.boot.library.path = C:\j2sdk1.4.2_09\jre\bin
 java.vm.version = 1.4.2_09-b05
 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
 user.country = CN
 sun.os.patch.level = Service Pack 2
 java.vm.specification.name = Java Virtual Machine Specification
 user.dir = E:\eclipse\testDemo
 java.runtime.version = 1.4.2_09-b05
 java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
 java.endorsed.dirs = C:\j2sdk1.4.2_09\jre\lib\endorsed
 os.arch = x86
 java.io.tmpdir = C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\
 line.separator =
 java.vm.specification.vendor = Sun Microsystems Inc.
 user.variant =
 os.name =


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