在java中绘制多个椭圆

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

public class EllipsePanel extends JPanel {
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;

        int width = getWidth();
        int height = getHeight();

        // 绘制多个椭圆
        for (int i = 0; i < 5; i++) {
            int x = (int) (Math.random() * width);
            int y = (int) (Math.random() * height);
            int w = (int) (Math.random() * 100);
            int h = (int) (Math.random() * 100);

            Ellipse2D ellipse = new Ellipse2D.Double(x, y, w, h);
            g2d.draw(ellipse);
        }
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Ellipse Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 400);

        EllipsePanel panel = new EllipsePanel();
        frame.add(panel);

        frame.setVisible(true);
    }
}