Getting Pixels from a Buffered Image

 // Get one pixel.
 int rgb = bufferedImage.getRGB(x, y);
   
 // Get all the pixels.
 int w = bufferedImage.getWidth(null);
 int h = bufferedImage.getHeight(null);
 int[] rgbs = new int[w*h];
 bufferedImage.getRGB(0, 0, w, h, rgbs, 0, w);
   
 // Set a pixel.
 rgb = 0xFF00FF00; // green
 bufferedImage.setRGB(x, y, rgb);