EDIT

import java.net.InetAddress;

import java.net.UnknownHostException;

import org.apache.http.client.methods.HttpHead;

import org.apache.http.client.methods.HttpUriRequest;

		String query = null;

		if(! qparams.isEmpty()){

			query = URLEncodedUtils.format(qparams, "UTF-8");

		}

				baseUrl.getHost(), baseUrl.getPort(), path, query, fragment);

	/**

	 * Tests internet connectivity by testing HEAD request for 4 known URL's.<BR>

	 * If non of them is available <code>false</code> is returned. Otherwise true.<BR> 

	 * @param firstUriToTest if not <code>null</code> this URI is tested before testing the standard URLs.

	 * @return true if internetconnectivity is given.

	 */

	public static boolean isInternetAvailable(URI firstUriToTest){

		boolean result = false;

		if (firstUriToTest != null && isServiceAvailable(firstUriToTest)){

			return true;

		}

		URI uri = URI.create("http://www.cnn.com/");

		if (isServiceAvailable(uri)){

			return true;

		}

		uri = URI.create("http://www.bahn.de/");

		if (isServiceAvailable(uri)){

			return true;

		}

		uri = URI.create("http://www.google.com/");

		if (isServiceAvailable(uri)){

			return true;

		}

		uri = URI.create("http://www.facebook.com/");

		if (isServiceAvailable(uri)){

			return true;

		}

		return result;

	}

	/**

	 * Performs HEAD request for the given URI.<BR>

	 * If any exception occurs <code>false</code> is returned. Otherwise true. <BR>

	 * @param serviceUri the URI to test.

	 * @return true if service is available.

	 */

	public static boolean isServiceAvailable(URI serviceUri){

		boolean result = false;

        //Http 

		HttpClient  client = new DefaultHttpClient();

		HttpUriRequest request = new HttpHead(serviceUri);

		try {

			// Execute the request

			HttpResponse response = client.execute(request);

			// Examine the response status

			if (logger.isDebugEnabled()){

				logger.debug(response.getStatusLine());

			}

			 result = true;

		} catch (UnknownHostException e1) {

			logger.warn("Unknwon Host: " +e1.getMessage());

		} catch (ClientProtocolException e2) {

			logger.warn("ClientProtocolException: " + e2.getMessage());

		} catch (IOException e3) {

			logger.warn("IOException: " + e3.getMessage());

		}

	     // When HttpClient instance is no longer needed, 

	     // shut down the connection manager to ensure

	     // immediate deallocation of all system resources

		//needed ?

//	     client.getConnectionManager().shutdown();   

		return result;

	}

	/**

	 * Tests reachability of a root server by trying to resolve a host name.

	 * @param hostNameToResolve the host name to resolve. If <code>null</code> 

	 * a default host name is tested.

	 * @return

	 */

	public static boolean isRootServerAvailable(String hostNameToResolve){

		try {

			if (hostNameToResolve == null){

				hostNameToResolve = "cnn.com";

			}

		    InetAddress inetHost = InetAddress.getByName(hostNameToResolve);

		    System.out.println("The hosts IP address is: " + inetHost.getHostAddress());

			return true;

		 } catch(UnknownHostException ex) {

		     System.out.println("Unrecognized host");

		     return false;

		 }

	}