用JAVA写一个会动的爱心代码

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
public class MovingHeart extends JFrame implements ActionListener {
    private JButton btnStart;
    private MovingPanel movingPanel;
       
    public MovingHeart() {
        super("Moving Heart");
 
        //创建控制面板和开始按钮
        JPanel controlPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
        btnStart = new JButton("Start");
        btnStart.addActionListener(this);
        controlPanel.add(btnStart);
        add(controlPanel, BorderLayout.NORTH);
 
        // 创建移动面板
        movingPanel = new MovingPanel();
        add(movingPanel, BorderLayout.CENTER);
        setResizable(false);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
 
    //按钮点击事件
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == btnStart) {
            movingPanel.startAnimation(); //开始动画
        }
    }
 
    public static void main(String[] args) {
        MovingHeart frame = new MovingHeart();
        frame.setSize(600, 600);
        frame.setVisible(true);
    }
}
 
//移动面板
class MovingPanel extends JPanel implements Runnable {
    private final int W = 200; // 爱心的宽度
    private final int H = 200; // 爱心的高度
    private final int INTERVAL = 50; //更新动画的时间间隔
    private Image image;
    private int x, y; //图片位置
    private int dx = 5, dy = 5; //每次移动的距离
    private Thread animation;
 
    public MovingPanel() {
        ImageIcon icon = new ImageIcon(getClass().getResource("heart.png"));
        image = icon.getImage();
        setPreferredSize(new Dimension(W, H));
 
        // 设置随机位置
        x = (int) (Math.random() * (getWidth() - W));
        y = (int) (Math.random() * (getHeight() - H));
    }
 
    //开始动画，创建线程并启动
    public void startAnimation() {
        if (animation == null) {
            animation = new Thread(this);
            animation.start();
        }
    }
 
    //线程循环
    public void run() {
        while (true) {
            x += dx;
            y += dy;
 
            //检测是否碰到边界
            if (x < 0 || x + W > getWidth()) {
                dx = -dx;
            }
            if (y < 0 || y + H > getHeight()) {
                dy = -dy;
            }
 
            //重绘
            repaint();
            try {
                Thread.sleep(INTERVAL);
            } catch (InterruptedException e) {
                break;
            }
        }
    }
 
    // 绘制爱心
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.drawImage(image, x, y, this);
    }
}

需要一个名为“heart.png”的心形图片，放在同一个文件夹下。