package com.example.test;import java.awt.Color;import java.awt.Font;import java.awt.Graphics;import java.awt.Image;import java.awt.Toolkit;
import java.util.jar.JarOutputStream;import javax.swing.JFrame;class Cardioid extends JFrame {//定义窗口大小private static final int WIDTH = 900;private static final int HEIGHT = 800;//获取屏幕大小private static final int WINDOW_WIDTH = Toolkit.getDefaultToolkit().getScreenSize().width;private static final int WINDOW_HEIGHT = Toolkit.getDefaultToolkit().getScreenSize().height;//构造函数public Cardioid() {//设置窗口标题super("♥爱心");//设置背景色this.setBackground(Color.BLACK);//设置窗口位置this.setLocation((WINDOW_WIDTH - WIDTH) / 2, (WINDOW_HEIGHT - HEIGHT) / 2);//设置窗口大小this.setSize(WIDTH, HEIGHT);//设置窗口布局this.setLayout(getLayout());//设置窗口可见this.setVisible(true);//设置窗口的默认关闭方式this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}//图形函数public void paint(Graphics g) {//横纵坐标及半径double x, y, r;//绘制图形double z = 0.0;double size=10;int jj=0;while (true) {Image image = this.createImage(WIDTH, HEIGHT);Graphics pic = image.getGraphics();if (jj%2==0){size=14.5;}else {size=15;}for (int ii = 30; ii > 0; ii--) {Color color = new Color(255, 175, (int) (20 * Math.random()) + 220);for (int i = 1; i < 400; i++) {
//                try {
//                    Thread.sleep(10);
//                } catch (InterruptedException e) {
//                    e.printStackTrace();
//                }int px = (int) (Math.random() * 10);int py = (int) (Math.random() * 10);x = 16 * (Math.sin(z) * Math.sin(z) * Math.sin(z)) * (size) + Math.pow((-1), px) * Math.random() * ii * Math.sqrt(ii) + WIDTH / 2;y = -(13 * Math.cos(z) - 5 * Math.cos(2 * z) - 2 * Math.cos(3 * z) - Math.cos(4 * z)) * (size) + Math.pow((-1), py) * Math.random() * ii * Math.sqrt(ii) + HEIGHT * 1 / 3;z += (Math.PI / 2.0) / 80;pic.setColor(color);
//                pic.setColor(new Color(0, 255, 255));pic.fillOval((int) x, (int) y, 2, 2);//                g.drawImage(image, 0, 0, this);}
//                if (ii < 12) {
//                    g.drawImage(image, 0, 0, this);
//                    try {
//                        Thread.sleep(100);
//                    } catch (InterruptedException e) {
//                        e.printStackTrace();
//                    }
//                }if (ii < 3) {pic.setFont(new Font("楷体", Font.BOLD, 40));//设置字体pic.setColor(Color.pink);pic.drawString("Love You", WIDTH / 2 - 100, 240);//绘制字符串pic.drawString("Forever", WIDTH / 2, 280);//绘制字符串g.drawImage(image, 0, 0, this);}}jj++;if (jj>100){break;}try {Thread.sleep(500);} catch (InterruptedException e) {e.printStackTrace();}}}}public class Love {public static void main(String[] args) {new Cardioid();}}

结果入下：