how to develop Restful web services with tools lik json/xml, maven build tool

Create a Calender resource to be exposed as “Restful web service”. Created Restful web service will supports simple yet powerful HTTPS application protocol with JSON or XML data.Request to the Restful web services will be send as HTTPs request. Body of the HTTP will contain the request in XML format or JSON format. Web service should process the request and send HTTPS response message with body containing the response of the request in XML or JSON format respectively. Requests MUST specify the HTTP Content-Type header with a value of application/json, text/XML. First option should be written first, so in this case server will try to return back information in JSON format and in case it’s not possible for server then in xml format. Please not that API/source code to be implemented such that it can use the calender object and to create a calender,update a calender and delete the calender. using GET ,POST,PUT ..................... Tasks are: Create calender modify calender delete calender . al these persormed by client on calender which s deployed on server