This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
No, you can't put Java code in faces-config. You can, however use EL. So as long as you have the bean in question mapped under a name in a context that the EL processor can use, you can do it. However, I don't know anything that's available off the shelf.
If you are using Spring and have added the Spring EL properties resolver to the faces-config, you can let Spring construct a bean based on those properties and inject it into JSF.
Customer surveys are for companies who didn't pay proper attention to begin with.