<p>Web services are applications that use open, XML-based standards and transport protocols to exchange data with clients. <br /><br />In the book Developing a JAX-WS Web Service using the wsimport clientjar Option, we shall create a JAX-WS web service with Java 7. We shall discuss the new clientjar option in the wsimport tool or the wsimport ant task which is used to generate JAX-WS portable artifacts from a service wsdl. Subsequently, we use the web service artifacts to invoke the web service from a web service client.</p>