// Shuffle the Cards in this deck
  public void shuffle() {
      for(int i = myDeck.size()-1; i >= 1; i--)
        {
          int r = (int)(Math.random() * i);
          Card tempCard1 = myDeck.get(i);
          Card tempCard2 = myDeck.get(r);
          myDeck.set(i, tempCard2);
          myDeck.set(r, tempCard1);
        } 
  }