src/solitaire/Deck.java

   1 package solitaire;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collections;
   5 import java.util.List;
   6
   7 final class Deck {
   8     private static final Suit[] suits = Suit.values();
   9     private static final Rank[] ranks = Rank.values();
  10
  11     private final List<Card> cards;
  12
  13     Deck() {
  14         this.cards = new ArrayList<>(suits.length * ranks.length);
  15
  16         for (Suit s : suits)
  17             for (Rank r : ranks)
  18                 cards.add(new Card(s, r));
  19     }
  20
  21     void shuffle() {
  22         Collections.shuffle(cards);
  23     }
  24
  25     Card draw() {
  26         return cards.removeLast();
  27     }
  28
  29     boolean isEmpty() {
  30         return cards.isEmpty();
  31     }
  32
  33     @Override
  34     public String toString() {
  35         if (isEmpty())
  36             return "{   }";
  37
  38         return "{ * }";
  39     }
  40 }