import java.util.*;public class Deck {   private static final List<Card> protoDeck = new ArrayList<Card>();   // Initialize prototype deck   static {      for (Suit suit : Suit.values())         for (Rank rank : Rank.values())               protoDeck.add(new Card(rank, suit));   }   public static ArrayList<Card> newDeck() {      return new ArrayList<Card>(protoDeck); // Return copy of prototype deck   }   public static void main(String[] args) {      System.out.println(newDeck());   }}