在java中显示图像或形状的2D网格

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

public class GridExample extends JFrame {
    private static final int WIDTH = 400;
    private static final int HEIGHT = 400;
    private static final int GRID_SIZE = 10;

    public GridExample() {
        setTitle("Grid Example");
        setSize(WIDTH, HEIGHT);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
    }

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

        int cellSize = WIDTH / GRID_SIZE;

        for (int x = 0; x < WIDTH; x += cellSize) {
            g2d.drawLine(x, 0, x, HEIGHT);
        }

        for (int y = 0; y < HEIGHT; y += cellSize) {
            g2d.drawLine(0, y, WIDTH, y);
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            GridExample example = new GridExample();
            example.setVisible(true);
        });
    }
}