CssBox

package csssprite;

import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.WindowConstants;

public class CssBox {

	public static void main(String[] args) throws Exception {

		final JFrame f = new JFrame();
		f.setSize(300, 300);
		f.setVisible(true);
		f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

		String url = "http://www.bbc.co.uk";
		String url2 = "http://icanhas.cheezburger.com/";
		String url3 = "http://slashdot.org/";
		
		getImages(url3).stream().forEach(i -> {
			f.getContentPane().getGraphics().drawImage(i, 0, 0, null);
			try {
				Thread.sleep(1000);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		});

		System.exit(0);
	}

	private static List<BufferedImage> getImages(String urlStr) throws Exception {

		URL url = new URL(urlStr);

		URLConnection conn = url.openConnection();

		StringBuilder b = new StringBuilder();
		try (BufferedReader br = new BufferedReader(new InputStreamReader(
				conn.getInputStream()))) {
			String l = br.readLine();
			while (l != null) {
				l = br.readLine();
				b.append(l);
			}
		}
		System.out.println(b);

		Pattern p = Pattern.compile("<img.*?src=\"([^\"]*)\".*?>",
				Pattern.CASE_INSENSITIVE);

		Matcher m = p.matcher(b.toString());

		List<BufferedImage> imgs = new ArrayList<BufferedImage>();
		while (m.find()) {
			String imgurl = m.group(1);
			System.out.println(imgurl);
			if (imgurl.startsWith("//")) imgurl = "http:" + imgurl;
			if (imgurl.startsWith("http")) {
				URLConnection c = new URL(imgurl).openConnection();
				imgs.add(ImageIO.read(c.getInputStream()));
			}
		}
		return imgs;
	}

}