private static void sendData(List<String> jsonDataPoints) throws IOException {

        for (String json : jsonDataPoints) {
            URL url = new URL(ENDPOINT);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setDoOutput(true);

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

            outputStream.writeBytes(json);
            System.out.println("Sending encoded song data to server... ");
            System.out.println(json);
            outputStream.flush();
            int responseCode = connection.getResponseCode();
            System.out.println("Response code: " + responseCode);


            outputStream.close();
            connection.disconnect();
        }
    }