get width height of image.scala

//trying this http://stackoverflow.com/a/1560052

  def readImageDimension(file: File): Option[Dimension] = {
    def getDimension(reader: ImageReader, input: ImageInputStream): Dimension = try {
      reader.setInput(input)
      val width: Int = reader.getWidth(0)
      val height: Int = reader.getHeight(0)
      Dimension(width, height)
    } finally {
      reader.dispose()
    }

    val input: ImageInputStream = ImageIO.createImageInputStream(file)
    try {
      val readers: Iterator[ImageReader] = ImageIO.getImageReaders(input).asScala
      readers.map(reader => Try(getDimension(reader, input))).collectFirst {
        case Success(dimension) => dimension
      }
    } finally {
      input.close()
    }
  }

/*
ImageInputStream in = ImageIO.createImageInputStream(resourceFile);
try {
  final Iterator readers = ImageIO.getImageReaders(in);
	if (readers.hasNext()) {
		ImageReader reader = (ImageReader) readers.next();
		try {
			reader.setInput(in);
			return new Dimension(reader.getWidth(0), reader.getHeight(0));
		} finally {
			reader.dispose();
		}
	}
} finally {
	if (in != null) in.close();
}
*/