how to get data through API?what is APIkey?

Question

How to get data through API? i develop one application using JSON.

inthat how to use httprequest and  httpresponse and display data json format..

how to get below data in json format using API..

Request :

 

BODY:

            {

                        "classtype_id":670,

                        "seats":C8,c9,

"apikey": your api key,

"password": your password

"multiplex_id": 51(your multiplex_id)

            }         

           

 

Response:

           

For Successful booking

                        {

"result":"OK",

"booking_id":"121"

}

            For seats that already booked

                        {         

"result":"fail",

"booking_id":null

}

           

Fail

{

"result":"fail",

"message":"Insufficient Arguments"

}