network.java

      HttpURLConnection urlConnection = null;
      try {
        URL url = new URL("https://www.android.com/");
        urlConnection = (HttpURLConnection) url.openConnection();
        return readInputStream(urlConnection.getInputStream());
      } catch (IOException e) {
        e.printStackTrace();
      } finally {
        if (urlConnection != null) {
          urlConnection.disconnect();
        }
      }
      return null;