Question

我正在尝试用Java创建一副卡片。

package cardgame;

public class CardGame {

    String[] numberList = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
    String[] suitList = {"Hearts", "Diamonds", "Clubs", "Spades"};    
    Card[] deck = new Card[52];

    public static void main(String[] args) {
        for(int i = 0; i < 4; i++) {
            for(int j = 0; j < 13; j++) {
                deck.add(Card(numberList[j], suitList[i]));
            }
        }
    }   
}

不幸的是这种添加卡片的方法不起作用，有没有人有任何建议？我收到以下错误：

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: Array.add
    at cardgame.CardGame.main(CardGame.java:12)

我主要是在python中进行编码所以我不确定我的语法是否正确

我的卡片构造函数如下：

package cardgame;

public class Card {

    private String number;
    private String suit;

    public Card(String number, String suit) {
        this.number = number;
        this.suit = suit;
    }

Answer 1

Java数组没有“添加”方法。它们不是对象。你想说

deck[i*13+j] = new Card(numberList[j], suitList[i]);

假设您已使用该构造函数在某处定义了卡类。

Answer 2

您必须通过调用“new”

创建对象

new Card(numberList[j], suitList[i])

此外，如果您使用数组，则无法使用add。但是，您可以使用列表：

String[] numberList = {"Ace", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Jack", "Queen", "King"};
String[] suitList = {"Hearts", "Diamonds", "Clubs", "Spades"};    
List<Card> deck = new ArrayList<>();

public static void main(String[] args) {
    for(int i = 0; i < 4; i++) {
        for(int j = 0; j < 13; j++) {
            deck.add(new Card(numberList[j], suitList[i]));
        }
    }
}

Java - 纸牌游戏，创建卡片

2 个答案: