UrlCheck.java

package de.danielsenff.imageflow.utils;

import java.net.HttpURLConnection;
import java.net.URL;

/**
 * @author danielsenff
 *
 */
public class UrlCheck {

	public static boolean exists(final String URLName){
		try {
			HttpURLConnection.setFollowRedirects(false);
			// note : you may also need
			// HttpURLConnection.setInstanceFollowRedirects(false);
			final HttpURLConnection con =	(HttpURLConnection) new URL(URLName).openConnection();
			con.setRequestMethod("HEAD");
			return (con.getResponseCode() == HttpURLConnection.HTTP_OK);
		} catch (final Exception e) {
			e.printStackTrace();
			return false;
		}
	}

	public static boolean existsFile(final String URLName){
		try {
			HttpURLConnection.setFollowRedirects(false);
			// note : you may also need
			// HttpURLConnection.setInstanceFollowRedirects(false);
			final HttpURLConnection con = (HttpURLConnection) new URL(URLName).openConnection();
			con.setRequestMethod("HEAD");

			if ((con.getResponseCode() == HttpURLConnection.HTTP_OK) &&
					con.getContentType().equals("text/html") == false ){
				final String contentType = con.getContentType();
				System.out.println("Contenttype: " + contentType);
				return true;
			} else {
				return false;
			}
		} catch (final Exception e) {
			e.printStackTrace();
			return false;
		}
	}
}