|Java API for XML Web Services (JAX-WS) provides a complete API to develop and invoke Web services over multiple transports (for example HTTP). NetBeans IDE provides first-class support for developing and invoking a JAX-WS based Web service. The missing piece is functional/compliance/load testing of the Web service. That's wheresoapUI helps.|
soapUI is free and open source desktop application for invoking (feature list) and testing of Web services over HTTP. It comes with a NetBeans pluginthat provides all the functionality from within the IDE to develop and test a Web service. After you install the plugin, follow this screencast to learn how to create functional and load tests for a JAX-WS Web service.
Thanks to Alexis for the pointer!