AsyncTask class to get JSON Response from web API

MyAsyncTask

public class ConnectTask extends AsyncTask<String, Void, String> {

        
    @Override
    protected String doInBackground(String... params) {

        StringBuilder stringBuilder = new StringBuilder();
        
        
        // params stores url of the API in string format that is needed to be convert in URL it comes from your MainActivity from where you execute asynctask.
        try {
        //String of API converting in URL
            URL url = new URL(http://api.openweathermap.org/data/2.5/weather?q="+params[0]+"&units="+params[1]+"&APPID=947cbe6c1905b31b4df44f41c09659d1);
        // HttpURLConnection is kind of browser that is needed to open or established connection
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        // Reading stream coming from our connection with API using bufferreader
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
        // This loop will read one line from our bufferreader and check its null or not and append every line in our stringbuilder
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line);
            }
            bufferedReader.close();
            // myResponse is global variable to store the all the response comes from API.
            myResponse = stringBuilder.toString();
        }
        catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return myResponse;
    }
    
    
     protected void onPostExecute(String response) {
        try {
        if(response.equals("")){
               //Toast for no response coming from API might be due to some network connection problem
            }
            
            else {
            //  convert our response String in JSONObject 
                JSONObject rootObject = new JSONObject(response);
             // Parse further JSON to get your desired values
            }
            
        } catch (JSONException e) {
            e.printStackTrace();
        }
        catch (NullPointerException e){
            e.printStackTrace();
        }

    }
    
}