java画跳动的爱心代码

下面是一个简单的Java代码示例，用于绘制跳动的爱心:

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class JumpingHeart extends JFrame implements ActionListener {
    private Timer timer;
    private int x, y;
    private int dx, dy;

    public JumpingHeart() {
        x = 200;
        y = 200;
        dx = 2;
        dy = 2;

        timer = new Timer(10, this);
        timer.start();

        setSize(500, 500);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

    public void paint(Graphics g) {
        super.paint(g);
        Graphics2D g2d = (Graphics2D) g;

        g2d.setColor(Color.RED);
        g2d.fillOval(x, y, 100, 100);
        g2d.fillOval(x + 100, y, 100, 100);

        int[] xPoints = {x, x + 200, x + 100};
        int[] yPoints = {y + 100, y + 100, y + 200};
        g2d.fillPolygon(xPoints, yPoints, 3);
    }

    public void actionPerformed(ActionEvent e) {
        if (x < 0 || x > 400) {
            dx = -dx;
        }
        if (y < 0 || y > 400) {
            dy = -dy;
        }

        x += dx;
        y += dy;

        repaint();
    }

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

这个程序使用Java的Swing库绘制了一个跳动的爱心。通过定时器和动画效果，爱心会在窗口中上下左右跳动。你可以将这段代码复制到一个Java文件中，然后运行它来看到效果。希望这对你有帮助！