public static String SendPushNotification(String targetURL,JSONObject dataPyload) {

        HttpURLConnection connection = null;

​

        try {

            //Create connection

            URL url = new URL(targetURL);

            connection = (HttpURLConnection) url.openConnection();

            connection.setRequestMethod("POST");

            connection.setRequestProperty("Content-Type","application/json");

            connection.setRequestProperty("Authorization","");

​

            connection.setRequestProperty("Content-Language", "en-US");

​

            connection.setUseCaches(false);

            connection.setDoOutput(true);

​

            //Send request

            DataOutputStream wr = new DataOutputStream (connection.getOutputStream());

            wr.writeBytes(String.valueOf(dataPyload));

            wr.close();

​

            //Get Response

            InputStream is = connection.getInputStream();

            BufferedReader rd = new BufferedReader(new InputStreamReader(is));

            StringBuilder response = new StringBuilder(); // or StringBuffer if Java version 5+

            String line;

            while ((line = rd.readLine()) != null) {

                response.append(line);

                response.append('\r');

            }

            rd.close();

            return response.toString();

        } catch (Exception e) {

            e.printStackTrace();

            return null;

        } finally {

            if (connection != null) {

                connection.disconnect();

            }

        }

    }

}