java生成一个动态爱心

以下是Java生成动态爱心的代码，使用了Java Swing库：

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

public class DynamicHeart extends JFrame {
    
    private static final int WIDTH = 600;
    private static final int HEIGHT = 600;
    
    public DynamicHeart() {
        setTitle("Dynamic Heart");
        setSize(WIDTH, HEIGHT);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setResizable(false);
        setVisible(true);
    }
    
    @Override
    public void paint(Graphics g) {
        super.paint(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setStroke(new BasicStroke(3));
        g2d.setColor(Color.RED);
        int x0 = WIDTH / 2;
        int y0 = HEIGHT / 2;
        int r = 150;
        double angle = 0;
        double dAngle = Math.PI / 180;
        while (angle < 2 * Math.PI) {
            int x = (int) (x0 + r * (16 * Math.pow(Math.sin(angle), 3)));
            int y = (int) (y0 - r * (13 * Math.cos(angle) - 5 * Math.cos(2 * angle) - 2 * Math.cos(3 * angle) - Math.cos(4 * angle)));
            g2d.drawLine(x0, y0, x, y);
            angle += dAngle;
        }
    }
    
    public static void main(String[] args) {
        new DynamicHeart();
    }
}

代码中使用了心形曲线方程，通过Graphics2D类的drawLine()方法连接每个点，形成了一个动态的爱心。运行代码即可看到动态爱心效果。