import java.util.*;




public class JavaMap
{
   Map<String, String> M = new HashMap<String, String>();


   M.put("John Doe", "Brother");
   M.put("Tom Doe", "Cousin");
   M.put("Jane Doe", "Sister");
   M.put("Todd Hall", "Neighbor");
   M.put("Ralph Smith", "Teacher");

   // Get a set of the entries
   Set s = M.entrySet();

   // Get an iterator
   Iterator iter = s.iterator();

   // Shorter:
   // Iterator iter = M.keySet().iterator();

   // Display elements
   while(iter.hasNext()) 
   {
      Map.Entry x;

      x = (Map.Entry) iter.next();

      System.out.print(x.getKey() + ": ");
      System.out.println(x.getValue());
   }
   System.out.println(); 



}