Reverse translating a PS file

Hi All,

I just made with a java program shown below that makes: GreenGlobe.gif
->aGif2PSFile.ps.

Is there any way with a java program to reverse that programming:
aGif2PSFile.ps->GreenGlobe.gif?

I used this program below:

import java.io.*;
import javax.print.*;
import javax.print.attribute.*;
import javax.print.attribute.standard.*;

/*
* Use the Java(TM) Print Service API to locate a service which can
export
* a GIF-encoded image to a stream as Postscript. This may be spooled to
a
* Postscript printer, or used in a postscript viewer.
*/

public class PrintGIF2PSStream {

 public static void main(String args[]) {

  /* Use the pre-defined flavor for a GIF from an InputStream */

  DocFlavor flavor = DocFlavor.INPUT_STREAM.GIF;

  /* Specify the type of the output stream */
  String psMimeType = DocFlavor.BYTE_ARRAY.POSTSCRIPT.getMimeType();

  /* Locate factory which can export a GIF image stream as Postscript
*/
  StreamPrintServiceFactory[] factories =
   StreamPrintServiceFactory.lookupStreamPrintServiceFactories(
     flavor, psMimeType);
  if (factories.length == 0) {
   System.err.println("No suitable factories");
   System.exit(0);
  }

  try {
   /* Load the file */
   FileInputStream fis = new FileInputStream("GreenGlobe.gif");
   /* Create a file for the exported postscript */
   String filename = "aGif2PSFile.ps";
   FileOutputStream fos = new FileOutputStream(filename);

   /* Create a Stream printer for Postscript */
   StreamPrintService sps = factories[0].getPrintService(fos);

   /* Create and call a Print Job for the GIF image */
   DocPrintJob pj = sps.createPrintJob();
   PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
   //aset.add(new Copies(2));
   aset.add(MediaSizeName.ISO_A4);
  //aset.add(Sides.TWO_SIDED_LONG_EDGE);
  //aset.add(Finishings.STAPLE);

   Doc doc = new SimpleDoc(fis, flavor, null);

   pj.print(doc, aset);
   fos.close();

  } catch (PrintException pe) {
   System.err.println(pe);
  } catch (IOException ie) {
   System.err.println(ie);
  }
 }