Java web UI - where to start to build a modern web-site? [closed]

Question

I acknowledge this question as broad and vague, but I would like to know from those with Web-UI experience in Java..

When you get a task to build a web application, like a web site (for example, e-store) what framework is a good start to get in touch with up-to-date Java web technologies?

The question is not about which framework is better and why, the question is: if you want to learn the common and modern ways of building web-ui application with Java, where is best to start to pick the essentials of building scalable and reliable web applications that can grow from a start-up site with a few pages to huge applications with hundreds of connections per second?

Answer 1

Spring Roo should get you up and running in no time and will automatically make you use Spring Framework, Spring MVC, Spring WebFlow, JSP, JSTL, JPA, AspectJ, etc etc.

I personally use Roo to get the foundations in, then I "un-Roo" my project and carry on about my business extending the project the way I need to.