Java Properties create from another Properties

// Use a default property list.  
import java.util.*;  
   /* w  w  w  .  ja v  a 2 s  .  c om*/
public class Main {  
  public static void main(String args[]) {  
    Properties defList = new Properties();  
    defList.put("Florida", "Tallahassee");  
    defList.put("Wisconsin", "Madison");  
  
    Properties capitals = new Properties(defList);  
  
    capitals.put("Illinois", "Springfield");  
    capitals.put("Missouri", "Jefferson City");  
    capitals.put("Washington", "Olympia");  
    capitals.put("California", "Sacramento");  
    capitals.put("Indiana", "Indianapolis");  
  
    // Get a set-view of the keys. 
    Set<?> states = capitals.keySet(); 
  
    // Show all of the states and capitals. 
    for(Object name : states)  
      System.out.println("The capital of " +  
                         name + " is " +  
                         capitals.getProperty((String)name)  
                         + ".");  
  
    System.out.println();  
  
    // Florida will now be found in the default list.  
    String str = capitals.getProperty("Florida");  
    System.out.println("The capital of Florida is "  
                       + str + ".");  
  }  
}