code: public JSONObject instantiateJsonObject(InputStream in) throws IOException,
                                                                  JSONException {
      BufferedReader reader = new BufferedReader(new InputStreamReader(in));
      StringBuffer contents = new StringBuffer();
      String text = null;
      while ((text = reader.readLine()) != null) {
        contents.append(text).append(System.getProperty("line.separator"));
      }
      in.close();
      JSONObject json = new JSONObject(contents.toString());
      return json;
    }
docs: Given an input stream, read in the contents of the file
  and instantiate a JSON object if it exists.