Java: Checks link validity by evaluating HTTP headers using JSoup

NetUtilities.java

package net.libcode.www.frequentutilities.net;

import org.jsoup.Connection;
import org.jsoup.Connection.Response;
import org.jsoup.Jsoup;

public class NetUtilities {
	
	/**
	 * Checks link validity by evaluating HTTP headers
	 * Requires JSoup library
	 * @param link a String URL to request
	 * @return true if request is successful or false
	 */
	public static boolean isValidLink(String link) {
		boolean connected = false;
		int attempts = 0;
		while (!connected) {
			if (attempts++ == 3)
				break;
			try {
				Connection connection = Jsoup.connect(link);
				connection.followRedirects(false);
				Response response = connection.execute();
				return response.statusCode() == 200;
			} catch (Exception ex) {
				System.out.println("Connection failure #" + attempts + ": " + link);
				System.out.println(ex.getMessage());
			}
		}
		return false;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// All false
		System.out.println(NetUtilities.isValidLink("www.xyzabc.boo"));
		System.out.println(NetUtilities.isValidLink("http://<thermodynamiccomputing.com"));
		System.out.println(NetUtilities.isValidLink("http://www.gurglegurglegurgle.com"));
		System.out.println(NetUtilities.isValidLink("http://www.google.com/Boo"));
		
		// All true
		System.out.println(NetUtilities.isValidLink("http://www.google.com"));
		System.out.println(NetUtilities.isValidLink("http://www.libcode.net"));
		System.out.println(NetUtilities.isValidLink("http://slisweb.sjsu.edu/audience/current.htm"));
		System.out.println(NetUtilities.isValidLink("http://sonomalibrary.org/history/archive/?p=collections/controlcard&id=19"));
	}

}