HttpURLConnection 을 이용해서 http status code 받아 오기

아래와 같은 내용으로 접근하려는 웹서버의 http status code 를 확인 할 수 있습니다.

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); StrictMode.setThreadPolicy(policy); URL url; HttpURLConnection connection = null; try {     url = new URL("http://sysdocu.tistory.com");     connection = (HttpURLConnection) url.openConnection();     Toast.makeText (DetailsActivity.this, "응답 결과 : " + connection.getResponseCode(), Toast.LENGTH_SHORT).show(); } catch (IOException e) {     e.printStackTrace(); } finally {     if (connection != null) {         connection.disconnect();     } }