Java 7 supports Java API for XML Web Services (JAX-WS) 2.2.4, which has introduced a new (since JAX-WS 2.2.2) wsimport option called -clientjar as shown in the following sample command:

wsimport -clientjar wsclient.jar http://example.com/service/hello?WSDL

The -clientjar option fetches the WSDLs and the schemas and packages them with the generated client-side artifacts into a JAR file. By including the generated JAR file in the classpath of the web service client, there is no need to fetch the WSDLs from the endpoint each time a service instance is created, thus saving on network overhead.