HttpURLConnection.HTTP_OK
import java.net.HttpURLConnection; import java.net.URL; public class Main { public static void main(String[] argv) throws Exception { HttpURLConnection.setFollowRedirects(false); HttpURLConnection con = (HttpURLConnection) new URL("http://www.google.coom").openConnection(); con.setRequestMethod("HEAD"); System.out.println(con.getResponseCode() == HttpURLConnection.HTTP_OK); } }