Question

我想在每次点击面板时返回鼠标点击次数。我有一个BasePanel类，其中包含以下代码片段：

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在这里，我想返回count变量。我希望ButtonsPanel类能够访问BasePanel类中的getCount（）方法。

    BasePanel(){ //inside the BasePanel Class
        addMouseListener(new MouseAdapter(){
            public void mouseReleased(MouseEvent e){
                if(clicked == troop1){
                    count1--;
                    count = count1; //i want count to be accessible in another class
                    System.out.println("Troop1 count: "+count);
                }else if(clicked == troop2){
                    count2--;
                    count = count2;
                    System.out.println("Troop2 count: "+count);
                }
            }
            public int getCount(){ //how can this method be accessible in another class
                return count;
            }
        });
    }

但我认为，我在ButtonsPanel类中访问getCount（）方法的方式是错误的。

Answer 1

getCount()是MouseAdapter的匿名类实现方法。

如果您希望能够访问它，则必须将其从匿名状态中删除：

BasePanel(){
    MouseAdapter mouseAdapter = new MouseAdapter(){
        public void mouseReleased(MouseEvent e){
            if(clicked == troop1){
                count1--;
                count = count1; //i want count to be accessible in another class
                System.out.println("Troop1 count: "+count);
            }else if(clicked == troop2){
                count2--;
                count = count2;
                System.out.println("Troop2 count: "+count);
            }
        }
        public int getCount(){
            return count;
        }
    });

    addMouseListener(mouseAdapater);
}

并为您的班级添加一个getter方法：

public MouseAdapter getMouseAdapater() {
    return mouseAdapter;
}

然后您可以这样访问它：

ButtonsPanel(){ //inside the ButtonsPanel class
    BasePanel pane = new BasePanel();
    MouseAdapter adapater = pane.getMouseAdapater();
    troop1 = new JButton(""+adapater.getCount());
    troop2 = new JButton(""+adapater.getCount());
}

访问addMouseListener（）方法中的方法

1 个答案: