I'm a web developer and I've used PHP, along with MySQL, Javascript, jQuery etc; all of which I'm very confident with and can use on a professional level.

What I'm wanting to do however, is to start using Java instead of PHP as I'm creating sites that need to be scalable.

I really need a starting point.

I can program in Java, I understand the language but have never used it for the web.

Links, tutorials, examples would be a great help. I have also considered using Scala (the language Twitter is written in).. but don't really understand the benefits.

Please no jargon; I need clear information that essentially takes me through the process of creating a very simple website using Java; I'm more than capable of building the site once that's done.. I think.

I've previously used Eclipse so if assume I can.

Thanks in advance!