private void magic() throws IOException {
		File file = new File("images/mango.png");
		BufferedImage img = ImageIO.read(file);
		int pixel;
		Color col;
		String text = "";
//		float[] hsb = new float[3];
		byte[] array = new byte[img.getWidth() * 3];
		FileOutputStream fos = new FileOutputStream("filename.7z");
		for (int y = 0; y < img.getHeight(); y++) {
			for (int i = 0; i < img.getWidth(); i++) {
				pixel = img.getRGB(i, y);
				col = new Color(pixel);
				array[i*3] = (byte) (col.getRed());
				array[i*3 + 1] = (byte) (col.getGreen());
				array[i*3 + 2] = (byte) (col.getBlue());
			}
			fos.write(array);
//			System.out.println(text);
//			text = "";
		}
		fos.close();
	}