对enableEvents类的应用

最新推荐文章于 2024-03-13 16:29:28 发布

yang_zhi_xiang

最新推荐文章于 2024-03-13 16:29:28 发布

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分类专栏： java基础文章标签： string class 应用

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这里写图片描述

实现代码如下：
MyButton.java文件代码：

import java.awt.*;
import java.awt.event.*;

public class MyButton extends Button {
    private MyButton friend = null;

    public MyButton(String title) {
        // TODO Auto-generated constructor stub
        super(title);
        enableEvents(AWTEvent.MOUSE_MOTION_EVENT_MASK);
    }

    public void setFriend(MyButton friend) {
        this.friend = friend;
    }

    protected void processMouseMotionEvent(MouseEvent e) {
        setVisible(false);
        friend.setVisible(true);
    }
}

TestMyButton.java文件里的代码：

import java.awt.*;
import java.awt.event.*;

public class TestMyButton extends Frame {
    public TestMyButton() {
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                dispose();
                System.exit(0);
            }
        });
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        System.out.println("Starting TestMyButton...");
        TestMyButton mainFrame = new TestMyButton();

        MyButton btn1 = new MyButton("你来抓我呀！");
        MyButton btn2 = new MyButton("你来抓我呀！");
        btn1.setFriend(btn2);
        btn2.setFriend(btn1);

        mainFrame.add(btn1, "North");
        mainFrame.add(btn2, "South");
        mainFrame.setSize(400, 400);
        mainFrame.setTitle("TestButton");
        mainFrame.setVisible(true);
        btn2.setVisible(false);
    }
}