java会跳动的爱心代码

Java中可以用Swing来实现跳动的爱心代码。以下是一个简单的实现示例：

import javax.swing.*;
import java.awt.*;

public class Heart extends JFrame {

    public Heart() {
        this.setSize(600, 600);
        this.setLocationRelativeTo(null);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        MyJPanel myJPanel = new MyJPanel();
        this.add(myJPanel);

        this.setVisible(true);
    }

    public static void main(String[] args) {
        new Heart();
    }
}

class MyJPanel extends JPanel implements Runnable {

    private int x;
    private int y;
    private double i;

    public MyJPanel() {
        x = 270;
        y = 240;
        i = 0;
        new Thread(this).start();
    }

    public void paint(Graphics g) {
        super.paint(g);
        g.setColor(Color.RED);
        for (i = 0; i <= 2 * Math.PI; i += 0.05) {
            double x1 = 16 * Math.pow(Math.sin(i), 3);
            double y1 = 13 * Math.cos(i) - 5 * Math.cos(2 * i) - 2 * Math.cos(3 * i) - Math.cos(4 * i);
            g.fillRect((int) (x + x1), (int) (y - y1), 2, 2);
        }
    }

    public void run() {
        while (true) {
            try {
                Thread.sleep(50);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            x -= 3;
            y -= 3;
            repaint();
        }
    }
}

如果你运行这个程序，你就会看到一个跳动的爱心。同时，以下是一些相关问题：