Enterprise Web Services

A Port is an instance of a Web Service object. The Port terminology is defined by JSR-109, which states: "A service instance, called a Port, is created and managed by the server."

If a JWS file does not implement a service endpoint interface, all public methods other than those inherited from java.lang.Object will be exposed as Web Service operations. You can override this behavior by using the @WebMethod annotation to specify explicitly those public methods that are to be exposed. If @WebMethod annotation is present, only the methods to which it is applied are exposed.

Web service operations are equivalent to Java public methods. They are the whole reason for having a web service.

Coarse-grained interfaces are recommended as a best practice for external integration in SOA.

A standalone web service client leverages client artifacts to make a call on a web service operation. The client first creates a service. It then obtains a port from the service. Then methods corresponding to the web service's operations can be called on the port.