How to convert a Graphics object into a JPG image?

Question

I have this simple question about how to make a Graphics object into a JPG file...
I just need the names of the classes or the packages ... I'll figure out the rest of the details...
Thanks...

Answer 1

Anyway this might come in handy
JPEGUtils.java
============
* Created on Jun 22, 2005 by @author Tom Jacobs
package tjacobs.jpeg;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageDecoder;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
* Utilities for saving JPEGs and GIFs
public class JPEGUtils {
     private JPEGUtils() {
          super();
     public static void saveJPEG(BufferedImage thumbImage, File file, double compression) throws IOException {
          BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(file));
          saveJPEG(thumbImage, out, compression);
          out.flush();
          out.close();
     public static void saveJPEG(BufferedImage thumbImage, OutputStream out, double compression) throws IOException {
          JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
          JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage);
          compression = Math.max(0, Math.min(compression, 100));
          param.setQuality((float)compression / 100.0f, false);
          encoder.setJPEGEncodeParam(param);
          encoder.encode(thumbImage);
     public static BufferedImage getJPEG(InputStream in) throws IOException {
          try {
               JPEGImageDecoder decode = JPEGCodec.createJPEGDecoder(in);
               BufferedImage im = decode.decodeAsBufferedImage();
               return im;
          } finally {
               in.close();
     public static BufferedImage getJPEG(File f) throws IOException {
          InputStream in = new BufferedInputStream(new FileInputStream(f));
          return getJPEG(in);
     public static void saveGif(RenderedImage image, File f) throws IOException {
          saveGif(image, new FileOutputStream(f));
     public static void saveGif(RenderedImage image, OutputStream out) throws IOException {
//          Last time I checked, the J2SE 1.4.2 shipped with readers for gif, jpeg and png, but writers only for jpeg and png. If you haven't downloaded the whole JAI, and you want a writer for gif (as well as readers and writers for several other formats) download:
//          http://java.sun.com/products/java-media/jai/downloads/download-iio.html
          ImageIO.write(image, "gif", out);
     public static void main(String[] args) {
          // TODO Auto-generated method stub
}