ImageIO - Saving JPGs

I'm working on an Image Editor program which supports transparency (alpha). But, when I try to save it as a JPEG/JPG (no transparency) it changes the colors around entirely. I tried copying the data over to an RBG image from the ARGB image, but it doesn't seem to solve the problem. I'm pretty new to the ImageIO stuff. Also, it saves fine when I load in a JPG then resave as a JPG, so I'm guessing it's an issue with converting it.

Saves fine as PNG or GIF (left), but not when saved as JPG (right)
http://nubcraft.org/stuff/MAv.pnghttp://nubcraft.org/stuff/MAv.jpg

Then when I changed it to the below code, JPGs save like this:
http://nubcraft.org/stuff/MAv2.jpg

Here's my save method.

Code:

---

public void saveImage(File f)
{
        try
        {
                String ext = FileUtils.getExtension(f);
                if(ext.equals("jpg") || ext.equals("jpeg"))
                {
                        BufferedImage copy = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_RGB);
                        copy.setData(image.getData());
                        ImageIO.write(copy, FileUtils.getExtension(f), f);
                }
                else
                {
                        ImageIO.write(image, FileUtils.getExtension(f), f);
                }
                status = FileStatus.SAVED;
        }
        catch(IOException e)
        {
                e.printStackTrace();
        }
}

---

Hmm, I found an interesting solution. I just drew one image on a blank image of the other type to "convert" it. :P

Code:

---

public class ImageUtils
{
        public static BufferedImage ARGBtoRGB(BufferedImage argbImage)
        {
                BufferedImage rgbImage = new BufferedImage(argbImage.getWidth(), argbImage.getHeight(), BufferedImage.TYPE_INT_RGB);
                rgbImage.getGraphics().drawImage(argbImage, 0, 0, null);
                return rgbImage;
        }
       
        public static BufferedImage RGBtoARGB(BufferedImage rgbImage)
        {
                BufferedImage argbImage = new BufferedImage(rgbImage.getWidth(), rgbImage.getHeight(), BufferedImage.TYPE_INT_ARGB);
                argbImage.getGraphics().drawImage(rgbImage, 0, 0, null);
                return argbImage;
        }
}

---

That makes sense. Your first bit of code copies the data assuming that the data configuration is automatically BufferedImage.TYPE_INT_RGB, and it seems that this just is not so.