问我应该如何处理我的Java 21点游戏中的王牌？另外，我怎样才能停止重复的卡交易？

EN

  public static int calcScore(ArrayList<Card> hand){
    int sum = 0;
    for (Card c : hand){
        sum += c.getCardValue().getNumeric();
      }    
    return sum;
  }

  public static int calcScore(ArrayList<Card> hand){
    Scanner aceHandler = new Scanner(System.in);
    int sum = 0;
    boolean countedAce = false;

    for (Card c : hand){
      if (!c.getCardValue().getFace().equals("A")){
      sum += c.getCardValue().getNumeric();
      }
      else{
        if (sum >= 11){
          sum += 1;
        }

        else if (countedAce == false){
          System.out.println("Do you want 1 or 10 for ace? \n Enter '1' or '11'");
          String answer = aceHandler.nextLine();

          if(answer.equals("1")){
            sum+=1;
            countedAce = true;
          }
          else{
            sum+=11;
            countedAce = true;
          }
        }

      }
    }
    return sum;
  } 

  public static ArrayList<Card> dealIn(ArrayList<Card> hand){

    Card a = new Card();
    Card b = new Card();

    hand.add( a);

    if(!b.equals(a))
      hand.add(b);

    return hand;
  }