更改对象参数

Question

我有这段代码

        for (int j = 0; j < 2; j++) {

        // Shuffle images array
        Collections.shuffle(Arrays.asList(cards));

        for (int i = 0; i < cards.length; i++) {

            // Create new instance of card
            final Card card = new Card(cards[i].getCardID(), cards[i].getCardImage());

            ImageIcon icon = card.getDefIcon(); 
            card.setIcon(icon);
            this.add(card);


            card.addMouseListener(new MouseAdapter()  
            {
                card.clicked = true;
                public void mouseReleased(MouseEvent e)  
                {  


                }  
            });  

        }

    }

但是“card.clicked = true”的行有错误 令牌“clicked”上的语法错误，此令牌后的VariableDeclaratorld

Card类看起来像这样

public class Card extends JLabel {
int cardID;
public boolean clicked = false;
BufferedImage cardImage;
ImageIcon defIcon = new ImageIcon("E:/Java Projects/UUR - Semestralka/resources/card.png");


Card (int cardID, BufferedImage cardImage) {
    this.cardID = cardID;
    this.cardImage = cardImage;
}

public int getCardID() {
    return cardID;
}

public BufferedImage getCardImage() {
    return cardImage;
}

public ImageIcon getDefIcon() {
    return defIcon;
}
}

有谁知道我做错了什么？

Answer 1

你需要把

card.clicked = true;

方法内部如下

public void mouseReleased(MouseEvent e) 
{ 
    card.clicked = true;
} 

Answer 2

card.clicked = true必须进入方法正文（在void mouseReleased(...)内）

Answer 3

您应该将其移至匿名mouseReleased

的MouseAdapter方法

Answer 4

card.addMouseListener(new MouseAdapter() {
    //card.clicked = true; <-- cant be here
    public void mouseReleased(MouseEvent e) {  
        card.clicked = true; //should go here
    }  
});