restful-web-services41.What HTTP Status Code 200 states?
It means, OK, shows success.

42.What HTTP Status Code 201 states?
It means, CREATED, when a resource is successful created using POST or PUT request. Return link to newly created resource using location header.

43.What HTTP Status Code 204 states?
It means, NO CONTENT, when response body is empty for example, a DELETE request.

44.What HTTP Status Code 304 states?
It means, NOT MODIFIED, used to reduce network bandwidth usage in case of conditional GET requests. Response body should be empty. Headers should have date, location etc.

45.What HTTP Status Code 400 states?
It means, BAD REQUEST, states that invalid input is provided e.g. validation error, missing data.

46.What HTTP Status Code 401 states?
It means, FORBIDDEN, states that user is not having access to method being used for example, delete access without admin rights.

47.What HTTP Status Code 404 states?
It means, NOT FOUND, states that method is not available.

48.What HTTP Status Code 409 states?
It means, CONFLICT, states conflict situation while executing the method for example, adding duplicate entry.

49.What HTTP Status Code 500 states?
It means, INTERNAL SERVER ERROR, states that server has thrown some exception while executing the method.

50.What is JAX-RS?
JAX-RS stands for JAVA API for RESTful Web Services. JAX-RS is a JAVA based programming language API and specification to provide support for created RESTful Webservices. Its 2.0 version was released in 24 May 2013. JAX-RS makes heavy use of annotations available from Java SE 5 to simplify development of JAVA based web services creation and deployment. It also provides supports for creating clients for RESTful web services.

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