What is the difference between JAX-RS and JAX-WS

Question

After reading a few articles about JAX-RS and JAX-WS  I had a few questions that I want to confirm    Can JAX-RS do Asynchronous Request like JAX-WS  Can JAX-RS access a web service that is not running on the Java platform  and vice versa  What does it mean by  REST is particularly useful for limited-profile devices  such as PDAs and mobile phones   What does it mean by  JAX-RS do not require XML messages or WSDL service   API definitions

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JAX-WS - is Java API for the XML-Based Web Services - a standard way to develop a Web- Services in SOAP notation (Simple Object Access Protocol).

Calling of the Web Services is performed via remote procedure calls. For the exchange of information between the client and the Web Service is used SOAP protocol. Message exchange between the client and the server performed through XML- based SOAP messages.

Clients of the JAX-WS Web- Service need a WSDL file to generate executable code that the clients can use to call Web- Service.

JAX-RS - Java API for RESTful Web Services. RESTful Web Services are represented as resources and can be identified by Uniform Resource Identifiers (URI). Remote procedure call in this case is represented a HTTP- request and the necessary data is passed as parameters of the query. Web Services RESTful - more flexible, can use several different MIME- types. Typically used for XML data exchange or JSON (JavaScript Object Notation) data exchange...

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Another important point  JAX-WS represents SOAP  JAX-RS represents REST  How to choose between JAX-RS and JAX-WS web services implementation

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i have been working on Apachi Axis1 1 and Axis2 0 and JAX-WS but i would suggest you must JAX-WS because it allow you make wsdl in any format   i was making operation as GetInquiry   in Apache Axis2 it did not allow me to Start Operation name in Upper Case   so i find it not good   so i would suggest you must use JAX-WS

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Can JAX-RS do Asynchronous Request like JAX-WS    Yes  it can surely do use  Async     Can JAX-RS access a web service that is not running on the Java platform  and vice versa    Yes  it can Do     What does it mean by  REST is particularly useful for limited-profile devices  such as PDAs and mobile phones     It is mainly use for public apis it depends on which approach you want to use      What does it mean by  JAX-RS do not require XML messages or WSDL service   API definitions    It has its own standards WADL Web application Development Language  it has http request by which you can access resources they are altogether created by different mindset In case in Jax-Rs you have to think of exposing resources

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Can JAX-RS do Asynchronous Request like JAX-WS    1  I don t know if the JAX-RS API includes a specific mechanism for asynchronous requests  but this answer could still change based on the client implementation you use       Can JAX-RS access a web service that is not running on the Java platform  and vice versa    2  I can t think of any reason it wouldn t be able to      What does it mean by  REST is particularly useful for limited-profile devices  such as PDAs and mobile phones     3  REST based architectures typically will use a lightweight data format  like JSON  to send data back and forth  This is in contrast to JAX-WS which uses XML  I don t see XML by itself so significantly heavier than JSON  which some people may argue   but with JAX-WS it s how much XML is used that ends up making REST with JSON the lighter option      What does it mean by  JAX-RS do not require XML messages or WSDL service   API definitions    4  As stated in 3  REST architectures often use JSON to send and receive data  JAX-WS uses XML  It s not that JSON is so significantly smaller than XML by itself  It s mostly that JAX-WS specification includes lots overhead in how it communicates    On the point about WSDL and API definitions  REST will more frequently use the URI structure and HTTP commands to define the API rather than message types  as is done in the JAX-WS  This means that you don t need to publish a WSDL document so that other users of your service can know how to talk to your service  With REST you will still need to provide some documentation to other users about how the REST service is organized and what data and HTTP commands need to be sent

[web-services] What is the difference between JAX-RS and JAX-WS?

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