| JSONArray | A JSONArray is an ordered sequence of values. | 
| JSONObject | A JSONObject is an unordered collection of name/value pairs. | 
| JSONStringer | JSONStringer provides a quick and convenient way of producing JSON text. | 
| JSONTokener | A JSONTokener takes a source string and extracts characters and tokens from it. | 
| JSONException | The JSONException is thrown by the JSON.org classes then things are amiss. |