How to cut out and save a rectangle from an image?

Question

How can cut the image and save it block to another image?

Answer 1

If src is a BufferedImage, then you can cut the rectangle (x1,y1)-(x2,y2) from it and write that to dst.png like this:

final BufferedImage dst = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);    

Graphics2D g = dst.createGraphics();
g.drawImage(src, x1, y1, x2, y2, null);
g.dispose();

ImageIO.write(dst, "PNG", new FileOutputStream("dst.png"));