Scalable UI framework for Java EE web application

Can anyone suggest a good UI framework that can be used in a Java EE web application?

I will be doing a project that requires to generate a web UI on the fly. Regular JSP page coding makes it hard to do开发者_高级运维. There is a framework called Vaadin. It looks good to do a dynamic UI implementation. However, I don't know if it stable for production use. If there is any other good suggestion, please let me know.

I'd suggest Wicket. It's been in production use for years, it's very stable, it's very programmer-friendly, and it can easily handle dynamic UIs.

(But I have to agree that the Vaadin demos look hot)

I would say vaadin would be easier over wicket as the default UI elements look really good. Wicket, you will need to create your own css to make things look good (other than default html UI)

vaadin 6.5.0 was released a couple of days ago and has been there for a long time but recently made open source probably around 2-3 years ago at most if i remember right.

I love both Vaadin and Wicket and my opinion is that they are the best 2 frameworks out there. However, for this case, I would choose vaadin cause it is easier to get better looking UI elements