用Java画一个爱心

下面是一个使用 Java 实现绘制爱心的示例代码：

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

public class Heart extends JComponent {
    private int width = 300;
    private int height = 300;

    public void paintComponent(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setColor(Color.RED);
        int x = width / 2;
        int y = height / 4;
        int a = width / 4;
        int b = height / 2;
        g2.fillArc(x - a, y - b, 2 * a, 2 * b, 0, 180);
        g2.fillArc(x - b, y - a, 2 * b, 2 * a, 90, 180);
        Polygon p = new Polygon();
        p.addPoint(x, y);
        p.addPoint(x + a, y + b);
        p.addPoint(x - a, y + b);
        g2.fillPolygon(p);
    }

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

这段代码利用了 Java AWT 和 Swing 包中的图形绘制方法，通过椭圆、扇形和多边形的组合实现了爱心的绘制。