Memory error converting large jpg file

Question

Hi
I am trying to convert a large bmp file (160mb) into a jpg file.
However I'm getting outOfMemory errors. This is very strange since I have 1.5gb of Ram and I have set the java heap to 1g.
In any case does anyone know a conversion method that maybe doesn't have to have the whole file in memory at once.
Heres my code :
private void convert2jpg(int imageNum)
          String inputFile = "..//images//temp"+imageNum+".bmp";
          RenderedOp src = JAI.create("fileload", inputFile);
          String outputFile = "..//images//plate_3x3in_"+ imageNum+".jpg";
          JAI.create("filestore", src, outputFile, "jpeg",(ImageEncodeParam)null);     
Thanks
Aharon

Answer 1

Why not use ImageIO instead? Something like ImageIO.read(File) which returns a BufferedImage and then use that to write to the desired format using ImageIO.write()??