import java.util.*;

public class HashMapDemo {

   public static void main(String args[]) {
   
      // Create a hash map
      HashMap hm = new HashMap();
      // Put elements to the map
      hm.put("One", new Double(3434.34));
      hm.put("Two", new Double(123.22));
      hm.put("Three", new Double(1378.00));
      hm.put("Four", new Double(99.22));
      hm.put("Five", new Double(-19.08));
      
      // Get a set of the entries
      Set set = hm.entrySet();
      // Get an iterator
      Iterator i = set.iterator();
      // Display elements
      while(i.hasNext()) {
         Map.Entry me = (Map.Entry)i.next();
         System.out.print(me.getKey() + ": ");
         System.out.println(me.getValue());
      }
      System.out.println();
      // Deposit 1000 into Two's account
      double balance = ((Double)hm.get("Two")).doubleValue();
      hm.put("Two", new Double(balance + 1000));
      System.out.println("Two's new balance: " +
      hm.get("Two"));
   }
}