Haven't used Wicket, but this is what a good web framework comparison had to say about it[1]:
With its clear MVC model, clean HTML and a wicked component module, you can create new applications with reusable components quick and easy. Wicket does use a model inheritance for it’s components, which isn’t great due to a bit steeper learning curve.
The existence of markup files for every component gives you a clear separation of concerns between the controller deciding what to display and the view that specifies how to display. This not only reduces development time but also gives your web designers the confidence to modify the HTML code without worrying about crashing and destroying everything.
With its clear MVC model, clean HTML and a wicked component module, you can create new applications with reusable components quick and easy. Wicket does use a model inheritance for it’s components, which isn’t great due to a bit steeper learning curve.
The existence of markup files for every component gives you a clear separation of concerns between the controller deciding what to display and the view that specifies how to display. This not only reduces development time but also gives your web designers the confidence to modify the HTML code without worrying about crashing and destroying everything.
[1]: http://zeroturnaround.com/rebellabs/the-curious-coders-java-...