This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
The simplest option, as far as I know, if you do not want to involve yourself in the details of web services, is to use NetBeans.
NetBeans has very good tooling which even support drag-and-drop generation of operations on a web service.
For more information and tutorials, please see: http://netbeans.org/kb/trails/web.html
With this said, if you want more control and do want to involve yourself in the details of web service development, then NetBeans is not the best option.