The WebLogic Server's <clientgen> Ant task generates from a WSDL file the client-side artifacts used to invoke the web service.
You can access WebLogic Server's <clientgen> Ant task through Workshop by right-clicking a WSDL file and selecting Web Services > Web Service Client from ClientGen.
Using the ClientGen wizard you can specify the location of the artifacts (the Jar file) and other generation parameters.
JAX-RPC and JAX-WS WSDLs will result in different sets of artifacts being produced.
For detailed documentation on using clientgen and clientgen artifacts see <clientgen> Ant task in the WebLogic Server documentation.
Using JAX-WS and JAXB with WebLogic Server 10: JAX-WS Customization Binding on dev2dev.bea.com
Using JAX-WS and JAXB with WebLogic Server 10 on dev2dev.bea.com