Java HttpURLConnection get response code

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class Main {
   public static void main(String[] args) throws Exception {
      URL url = new URL("http://demo2s.com");
      HttpURLConnection con = (HttpURLConnection) url.openConnection();
      System.out.println("Request URL ... " + url);

      int code = con.getResponseCode();
      if ((code != HttpURLConnection.HTTP_OK) && //
            (code == HttpURLConnection.HTTP_MOVED_TEMP || //
                  code == HttpURLConnection.HTTP_MOVED_PERM || //
                  code == HttpURLConnection.HTTP_SEE_OTHER)) {//
         System.out.println("Response Code ... " + code);

         // get redirect url from "location" header field

         URL newUrl = new URL(con.getHeaderField("Location"));

         // open the connection again
         con = (HttpURLConnection) newUrl.openConnection();
         System.out.println("Redirect to URL : " + newUrl);
      }//  w  ww  . jav  a2  s.  c  o m

      BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
      String line;
      StringBuffer htmlStr = new StringBuffer();
      while ((line = in.readLine()) != null)
         htmlStr.append(line);
      in.close();
      System.out.println("Content... \n" + htmlStr);
   }
}