Mouse Drawn

[niladridey]

Hi
I have developed a code through that I can do free hand drawing on JPanel.
Now any one can tell me how to save this image as .BMP or .JPEG format.

The MoseDrawn Code is following
import javax.swing.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;



class PointDet {
Point p;
Color c;
boolean f;

PointDet (Point p, Color c, boolean f) {
this.p = p;
this.c = c;
this.f = f;
}

Point getPoint () {
return p;
}

Color getColor () {
return c;
}

boolean getFlag () {
return f;
}
}


class MouseDrawn extends JFrame {
MouseDrawn () {
setSize (800, 600);
setTitle ("Niladri's Free Hand Drawing");

getContentPane ().add (new ImageExPanel ());


addWindowListener (new WindowAdapter () {
public void windowClosing (WindowEvent e) {
System.exit (0);
}
});

show ();
}

public static void main (String [] args) {
new MouseDrawn();
}
}

/* MouseDrawn.java */
class ImageExPanel extends JPanel implements MouseMotionListener, ActionListener {
Vector v = new Vector ();
Color c = Color.black;

JButton colorB = new JButton ("Color");

public void actionPerformed (ActionEvent e) {
Object s = e.getSource ();

if (s == colorB) {
JColorChooser chooser = new JColorChooser ();
c = chooser.showDialog (null, "Choose Color", Color.black);
}
}

ImageExPanel () {
addMouseListener (new MouseAdapter () {
public void mousePressed (MouseEvent e) {
v.add (new PointDet (e.getPoint (), c, true));
repaint ();
}
});

add (colorB);

colorB.addActionListener (this);
setBackground (Color.white);
addMouseMotionListener (this);
}

public void paintComponent (Graphics g) {
super.paintComponent (g);

for (int i = 1; i < v.size (); ++i) {
PointDet pdimin1 = (PointDet)v.get (i - 1);
PointDet pdi = (PointDet)v.get (i);
g.setColor (pdi.getColor ());

if (!pdi.getFlag ())
g.drawLine (pdimin1.getPoint ().x, pdimin1.getPoint ().y, pdi.getPoint ().x , pdi.getPoint ().y);
else
g.drawRect (pdi.getPoint ().x, pdi.getPoint ().y, 1, 1);
}
}

public void mouseDragged (MouseEvent e) {
v.add (new PointDet (e.getPoint (), c, false));
repaint ();
}

public void mouseMoved (MouseEvent e) {}
}