Only to the extend that you learn java at the same time.

Java is not a conceptually difficult language;
in practice "Java Experience" is (actually) familiarity
with libraries and working practices.

   BugBear

That depends on what you mean by "learning".  You can certainly read all
the conceptual documentation and understand a great deal of it without
Java knowledge.  Does that mean you can go into a shop and build up a
J2EE system?  Most likely not.

Kind regards

    robert

Yes and no. Yes, in theory you could start learning J2EE and Java and
the same time, and learn a certain amount. But 'no' in that you wouldn't
be very experienced at Java, and confusion over Java language issues
versus confusion over J2EE concepts and issues would trip you up - if
something wasn't working the way you expected, how would you know if it
was a J2EE issue/concept, or just an issue with your understanding of
Java? In short, learning something is more fruitful when you limit the
amount of unknowns.
So in summary, I don't think it's wise.

What you gives you the interest in learning J2EE in particular, by the way?

I woldn't advise that. I am one of those people, who migrated to
java/j2ee from something else. It is incrementally harder to grasp
everything without knowing core java first. Besides if you are good at
c++, you can learn java with a week.