Icon zu Image konvertieren

Folgenden kleine Methode konvertiert ein Icon zu einem Image:

public Image iconToImage(Icon icon) {
   if (icon instanceof ImageIcon) {
      return ((ImageIcon)icon).getImage();
   } else {
      int width = icon.getIconWidth();
      int height = icon.getIconHeight();
      BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
      Graphics2D g2 = (Graphics2D) image.getGraphics();
      icon.paintIcon(null, g, 0, 0);
      return image;
   }
}