Java - Image Rotation

Question

I am trying to rotate image. I am using this Java code:

BufferedImage oldImage = ImageIO.read(new FileInputStream(\"C:\\\\workspace\\\\test\\\\src\\\\10.JPG\         


        

Answer 1

It is not enough to switch the width and height of the image. You are rotating using the center of the image as the origin of rotation. Just try the same with a sheet of paper and you will see it works the same way. You must also move the paper a little bit, which means to apply a transform to fix this. So, immediately after the rotate call, do this:

  graphics.translate((newImage.getWidth() - oldImage.getWidth()) / 2, (newImage.getHeight() - oldImage.getHeight()) / 2);