REST with JAX-RS using Jersey

JAX-RS: 

·         JAX-RS Specification is the Java API for RESTful web services.

·         JAX-RS specification is the outcome of the Java Specification Request (JSR) 311, 339.

·         JAX-RS provides high level simpler API to write RESTful web services that can run on Java EE and SE platforms.

·         JAX-RS is part of the Java EE6, and make developers to develop REST web application easily.

·         JAX-RS uses the declarative style of programming using annotations. 

·         JAX-RS annotations are runtime annotations; therefore, runtime reflection will generate the helper classes and artifacts for the resource.

JAX-RS Annotations 

The javax.ws.rs package contains JAX-RS annotations.

Annotation	Description
Path	It identifies the URI path. It can be specified on class or method.
PathParam	represents the parameter of the URI path.
GET	specifies method responds to GET request.
POST	specifies method responds to POST request.
PUT	specifies method responds to PUT request.
HEAD	specifies method responds to HEAD request.
DELETE	specifies method responds to DELETE request.
OPTIONS	specifies method responds to OPTIONS request.
FormParam	represents the parameter of the form.
QueryParam	represents the parameter of the query string of an URL.
HeaderParam	represents the parameter of the header.
CookieParam	represents the parameter of the cookie.
Produces	defines media type for the response such as XML, PLAIN, JSON etc.  It defines the media type that the methods of a resource class or MessageBodyWriter can produce.
Consumes	It defines the media type that the methods of a resource class or  MessageBodyReader can produce.