all i want to to do is to make afilter on a specific part of any image
here is my part of code..

			

			

			class RedBlueSwapFilterD extends RGBImageFilter {
			

			imageVector iv=new imageVector();
			

			public RedBlueSwapFilterD() {
			

			// The filter's operation does not depend on the
			

			// pixel's location, so IndexColorModels can be
			

			// filtered directly.
			

			

			canFilterIndexColorModel = false;
			

			

			}
			

			

			

			

			public int filterRGB(int x, int y, int rgb) {
			

			return ((rgb & 0xff00ff00)
			

			| ((rgb & 0xff0000) >> 16)
			

			| ((rgb & 0xff)
			<
			< 16));
			

			}
			

			

			

			}
			

			

			//-----------------------------------------------//
			

		

			

			

			RedBlueSwapFilterD colorfilterdimension = new RedBlueSwapFilterD();
			

			image = getImage(getDocumentBase(),"1532z.jpg");
			

			colorfilterdimension.filterRGBPixels (20,30,30,40,ai,0,378);
			

			img2 = createImage(new FilteredImageSource(image.getSource(),colorfilterdimension));
			

			g.drawImage (img1,100,100,this);
			

			///---------------------------