how to convert an image to matrix in java

1import java.awt.Color;
2import java.awt.image.BufferedImage;
3import java.io.File;
4import java.io.IOException;
5import javax.imageio.ImageIO;
6
7public class ImageUtil {
8
9    public static Color[][] loadPixelsFromFile(File file) throws IOException {
10
11        BufferedImage image = ImageIO.read(file);
12        Color[][] colors = new Color[image.getWidth()][image.getHeight()];
13
14        for (int x = 0; x < image.getWidth(); x++) {
15            for (int y = 0; y < image.getHeight(); y++) {
16                colors[x][y] = new Color(image.getRGB(x, y));
17            }
18        }
19
20        return colors;
21    }
22
23    public static void main(String[] args) throws IOException {
24        Color[][] colors = loadPixelsFromFile(new File("stars.jpg"));
25        System.out.println("Color[0][0] = " + colors[0][0]);
26    }
27}