A simple method to Send and Receive JSON from Web Service

It is a very common task that android applications have to request and recieve from web service where data are in JSON format. Here the task is implemented using a very simple method that takes the web service url and request parameters as JSON object and it returns what it obtains from the server as a JSON object. The main component of this method is the HttpURLConnection class.
The line con.setDoOutput(true); enables to send request body and the line con.setRequestMethod(“POST”); setting the request method as POST. The line con.setRequestProperty(“Content-Type”, “application/json”); designates the content to be in JSON format and the line con.setRequestProperty(“Accept”, “application/json”); setting json is acceptable for response. The line con.setReadTimeout(10000); sets the time 10 seconds for receiving data after establishing connection and the line con.setConnectTimeout(15000); sets the time out for 15 seconds for establishing connection.

public static JSONObject doPostRequest(String url, JSONObject jsonReq){
        JSONObject jsonRes = null;
        try {
            URL urlObj = new URL(url);
            HttpURLConnection con;
            con = (HttpURLConnection) urlObj.openConnection();
            con.setRequestProperty("Content-Type", "application/json");
            con.setRequestProperty("Accept", "application/json");
            byte[] outputBytes = jsonReq.toString().getBytes("UTF-8");
            OutputStream os = con.getOutputStream();
            //Receive the response from the server
            InputStream in = new BufferedInputStream(con.getInputStream());
            BufferedReader reader = new BufferedReader(new InputStreamReader(in));
            StringBuilder result = new StringBuilder();
            String strLine;
            while ((strLine = reader.readLine()) != null) {
            jsonRes = new JSONObject(result.toString());
        }catch (Exception e){
            Log.e("Exception", e.toString());
        // return JSON Object
        return jsonRes;

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