Reversing Map

import java.util.Enumeration;
import java.util.ResourceBundle;
public class ResourceBundleTest {
public static void main(String[] args) {
    ResourceBundle rb = ResourceBundle.getBundle("test.bundletest.mybundle");
   Map map=new HashMap();
   Enumeration <String> keys = rb.getKeys();
   while (keys.hasMoreElements()) {
      String key = keys.nextElement();
      String value = rb.getString(key);
     // Saving values in reverse manner
      map.put(value,key);
      System.out.println(key + ": " + value);
    }
}

}