Hello everyone,

As a part of an enterprise architecture exercise, i need to find a java-based framework filling these constraints :

1. heavy (i think) load : 5000 concurrent connections
2. widely known : can't be too exotic, the contractors would be too high priced.
3. relatively easy to use : developpement time must be reasonnable
4. must be as compliant as possible with the css/html layout produced by a designer
5. Must look like "web 2.0" from the marketing point of view.

What i learned from my limited experience is :

• jsf : 1, don't know. 2, 3 ok. 4 not ok (at least not without huge effort)
• wicket : 1, not really. 2, 3 and 4 ok.
• gwt : 1, don't know. 2, 3 ok. 4 not ok (but more ok than jsf)
• others : not really "web 2.0" or not really known

I'm really junior, so my ideas about those frameworks are probably wrong, that's why i come to you, stackoverflowees.

Thanks for helping :)