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：