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Following is simple  JAX-RS  tutorial, which sends “Hello World” text as response string using JAX-RS API and Jersey implementation. Technologies and Tools used in this article: 1.    JDK  2.     Eclipse  3.    Tomcat 4.    Maven  5.     Jersey 1.8 Create Maven Web Project Create a Maven web project and name it "helloworld" . File -> New -> Other -> Maven Project -> Next Select  maven-archetype-webapp Select  Next Type  Group Id,   Artifact Id  and  Package  name And select  Finish Add Project Dependencies Add Jersey repository using Maven. Use following URL to get appropriate repository. http://mvnrepository.com/artifact/com.sun.jersey/jersey-server Now update pom.xml file. File : pom.xml <project ...  > ...         ... <dependencies>                 ...                 ... <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-server&

JAX-RS is API specification   for RESTful web services using Java. RESTful web services is implementation of REST ( Representational State Transfer ) which is architectural design for distributed system or in general we can say JAX-RS  is a set of APIs to develop REST service.   This is a brief introduction about REST and JAX-RS. You can find more information on REST on Wiki and JAX-RS Official Site. What is REST? Representational state transfer is an abstraction of the architecture of the World Wide Web. More precisely, REST is an architectural style consisting of a coordinated set of architectural constraints (source  Wikipedia ) As JAX-RS is only a specification, we need to use it's implemented library to create RESTful web service. Following are such list of libraries Apache CXF , an open source  Web service  framework. Jersey , the reference implementation from  Sun  (now  Oracle ). RESTeasy,  JBoss 's implementation. Restlet , created