gistfile1.java

	Image img;

	...
	
	@Override
	protected void setup() {
		img = getImage("http://website.com/image.png", "image.png");
	}
	
	...

	private Image getImage(String url, String name) {
		try {
			File dir = new File(System.getProperty("file.seperator") + name);
			if (!dir.exists()) {
				ImageIO.write(ImageIO.read(new URL(url)),
						url.substring(url.lastIndexOf('.')).substring(1), dir);
			}
			return ImageIO.read(dir);
		} catch (Exception a) {
			a.printStackTrace();
		}
		return null;
	}