WebServices- JAX-RS RESTFul

JAX-RS (RESTFul web services)

JAX-RS is a specification for RESTful Web Services with Java and it is given by Sun.
Since JAX-RS it is a specification, other frameworks can be written to implement these specifications.
Few implemetations are Jersey from Oracle, Resteasy from Jboss, CXF from Apache, etc.

We can get the resource from RESTful service in different formats like, HTML, XML, JSON, TEXT, PDF and in the Image formats as well, but in real time we mainly we will prefer JSON. REST guidelines always talks about stateless communication between client and the Server. Stateless means, every single request from client to server will be considered as a fresh request. Because of this reason REST always prefers to choose HTTP as it a stateless protocol.

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There are two main implementation of JAX-RS API.

Jersey
RESTeasy

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