Question

我目前正在编写一个涉及随机卡片选择的程序，我想知道是否有办法让程序分别用jack，queen和king取代11,12和13号码？我可以使用if语句来检测大于10的值，但这会迫使我写4次相同的代码，这似乎适得其反。任何和所有回复都非常感谢！

int card0 = (cardGenerator.nextInt(13) + 2);
        int winTest = 4;
        while(winTest > 0)
        {
            Object[] highLowEqual = { "higher", "lower", "equal", "Quit" };
            Object userChoice = JOptionPane.showInputDialog(null,
            "The current card is " + card0 + ". Which do you think the next card will be? Remember: Ace is the highest possible.", "HiLo",
            JOptionPane.INFORMATION_MESSAGE, null,
            highLowEqual, highLowEqual[0]);
            int card1 = (cardGenerator.nextInt(13) + 2);

Answer 1

拥有一个知道如何自行打印的Card课程：

public class Card
{
    int rank; 

    // ...

    public String toString()
    {
        switch( rank )
        {
            case 1: return "Ace";
            case 2:
            case 3:
            case 4:
            case 5:
            case 6:
            case 7:
            case 8:
            case 9:
            case 10: return "" + rank;
            case 11: return "Jack";
            case 12: return "Queen";
            case 13: return "King";
            default: return "INVALID CARD RANK";
        }
    }
}

Answer 2

某些代码必须进行替换，代码必须在某处。正如khelwood所评论并由clcto回答的那样，你可以覆盖toString（）方法并将替换逻辑放在那里。

为数字指定名称

2 个答案: