How moving from PHP5.3 to Java 6 EE ?

Question

Hi all, I'm a Web 2.0 quite satisfied coder using mainly PHP5 in my webapps (small-medium sized), I find that PHP is supported, widespread, extensible, quite fast and simple. I can say I'm a PHP advanced coder, I'm able to code in OOP, MVC, Zend FW, memcached, ImageMagick and other stuff.

But... I heard << Java 6 EE is also a good option >> (with JSPs and JSFs). Is this true? I don't know Java.

It might be a good idea learning Java 6 EE platform for the future? Where to start from?

Thanks all.