Sams Teach Yourself J2EE™ in 21 Days, Second Edition

Day 20. Using RPC-Style Web Services with J2EE

As you saw yesterday, there are many ways of integrating existing and third-party applications and components with J2EE applications. However, the plethora of integration mechanisms has long been an issue. It would be better if there were a more consistent way of integrating applications. Additionally, expectations have increased around the capability to integrate applications that span organizations—particularly across the common communication medium of the Internet. Web Services provide a flexible and powerful integration mechanism that can be used to expose existing functionality and components to other organizations or new applications. Today and tomorrow, you will see how you can use Web Service ...