用Java写个爱心程序

以下是用Java编写的绘制爱心的程序：

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

public class Heart extends JPanel {
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;
        g2d.setStroke(new BasicStroke(3.0f));
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setColor(Color.RED);
        int x = getWidth() / 2 - 50;
        int y = getHeight() / 2 - 50;
        int width = 100;
        int height = 100;
        int cp_x1 = x + width / 4;
        int cp_y1 = y - height / 2;
        int cp_x2 = x - width / 2;
        int cp_y2 = y + height / 4;
        g2d.fillArc(cp_x1, cp_y1, width / 2, height / 2, 0, 180);
        g2d.fillArc(cp_x2, cp_y2, width / 2, height / 2, 0, 180);
        g2d.fillRect(x + width / 4, y, width / 2, height / 2);
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Heart");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 300);
        Heart panel = new Heart();
        frame.setContentPane(panel);
        frame.setVisible(true);
    }
}

运行该程序可以绘制一个红色的爱心形状在窗口中间。