Picking up image drawan on panel into image object and saving itto file.

hi dear friends,
please help me out , My problem is:
On challan generation screen we want to make provision for signeture.So for that purpose we have placed panel inside the frame where user can do the signeture.
Signeture drawing is working .But now the next step is that i want to store it in a file(I mean to say whatever drawn on panel) so that that file can be saved in database and later on it can be retrived when ever required.
will be thankful if anyone helps me.
waiting for replays.

try to use following code :
BufferedImage im = new BufferedImage(comp.getWidth(), comp.getHeight(), BufferedImage.TYPE_INT_RGB);          
                         Graphics2D g2 = im.createGraphics();
                         //you may want to set background color, etc...     
                         comp.paint(g2);          
                         try          
                              GIFEncoder gif = new GIFEncoder(im);
                              gif.Write(new FileOutputStream(file));
                         catch(Exception e)          
GifEncoder can be obtained from net. if u want i can mail u also.

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