Processamento de Imagens JPEG

public static void main(String[] args) {
		try {
			File file = new File(Teste.class.getResource("C:\\100_9.JPG").toString());
			if (file.exists()) {
				System.out.println("uau!");
			}
			BufferedImage image = ImageIO.read(file);
			//InputStream stream = new FileInputStream(file);
			//JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(stream);

			int width = image.getWidth();

			int height = image.getHeight();

			int nbands = image.getSampleModel().getNumBands();

			Raster inputRaster = image.getData();

			int[] pixels = new int[nbands*width*height];

			inputRaster.getPixels(0,0,width,height,pixels);

			for(int h=0;h<height;h++)
				for(int w=0;w<width;w++)
				{
					int offset = h*width*nbands+w*nbands;
					System.out.print("at ("+w+","+h+"): ");
					for(int band=0;band<nbands;band++)
						System.out.print(pixels[offset+band]+" ");
				}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}