Selecting parts of an image

Hi i have had a look on the forum and have found no topics that answer my problem. If this is not so then my apologies. I would like to know if there are methods available (or another way) so that it is possible to read in an image and then select a part of it so that a new image,of the selected part, can be created and passed on to other methods/classes.

Code:

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import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.*;

public class Subimages extends JPanel {
    Rectangle clip = new Rectangle(50,50,150,150);
    Point origin = new Point();
    BufferedImage image;

    public Subimages(BufferedImage image) {
        this.image = image;
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        origin.x = (getWidth() - image.getWidth())/2;
        origin.y = (getHeight() - image.getHeight())/2;
        g.drawImage(image, origin.x, origin.y, this);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setPaint(Color.red);
        g2.draw(clip);
    }

    public Dimension getPreferredSize() {
        return new Dimension(image.getWidth(), image.getHeight());
    }

    private void createSubimage() {
        // Wait for gui to settle down.
        new Thread(new Runnable() {
            public void run() {
                try {
                    Thread.sleep(1000);
                } catch(InterruptedException e) {
                    System.out.println("wait interrupted");
                }
                int x = clip.x - origin.x;
                int y = clip.y - origin.y;
                int w = clip.width;
                int h = clip.height;
                BufferedImage subimage = image.getSubimage(x, y, w, h);
                BufferedImage copy = GraphicsEnvironment.getLocalGraphicsEnvironment().
                                    getDefaultScreenDevice().
                                    getDefaultConfiguration().
                                    createCompatibleImage(w, h);
                System.out.println("copy type = " + copy.getType());
                Graphics2D g2 = copy.createGraphics();
                g2.drawImage(subimage, 0, 0, null);
                g2.dispose();
                JOptionPane.showMessageDialog(null, new ImageIcon(copy), "", -1);
            }
        }).start();
    }

    public static void main(String[] args) throws IOException {
        String path = "images/bison.jpg";
        BufferedImage image = ImageIO.read(new File(path));
        Subimages test = new Subimages(image);
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(new JScrollPane(test));
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
        test.createSubimage();
    }
}

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