The FlightAware SOAP Java Apache Net Beans Sample Code demonstrates how to start developing a JAX-WS Web Service Client in NetBeans. Steps cover create project and class, add the WSDL, inspect resources, and import stubs.
Flight price tracker Yapta's value proposition sounds a bit like Robin Hood of the travel industry. It will not only track travel prices for you, but to help you get a refund should the price of your reservation fall after you’ve booked it. I wouldn’t be surprised if Yapta can also be used to retrieve kittens from high branches, but that part of the Yapta API isn’t documented yet.