Jakarta RESTful Web Services

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Jakarta RESTful Web Services (JAX-RS)
Original author	Sun Microsystems
Developer	Eclipse Foundation

Jakarta RESTful Web Services, (JAX-RS; formerly Java API for RESTful Web Services) is a Jakarta EE API specification that provides support in creating web services according to the Representational State Transfer (REST) architectural pattern. JAX-RS uses annotations, introduced in Java SE 5, to simplify the development and deployment of web service clients and endpoints.

From version 1.1 on, JAX-RS is an official part of Java EE 6. A notable feature of being an official part of Java EE is that no configuration is necessary to start using JAX-RS. For non-Java EE 6 environments a small entry in the web.xml deployment descriptor is required.

"JSR 339: JAX-RS 2.0: The Java API for RESTful Web Services". Java Community Process.

↑ Little, Mark (October 1, 2008). "A Comparison of JAX-RS Implementations".