J2SE and J2EE difference

Hi,

I have a few confusions about J2SE and J2EE. If you can help to
clarify, that would be great.

1. What is the biggest difference between J2SE and J2EE? Is it just
that J2EE contains a few more extras libraries?
2. When I installed Java EE 5, the JRE installed is Java SE Run Time
library 6. Does it mean that J2EE and J2SE uses the same JRE?
3. Another question is regarding the J2EE implementations, like JBoss
and Sun Java System Application Server. Where does this piece come
into play? What is it used for? If I wrote an application with J2EE,
do I only need the JRE to run it, or I need the application servers to
run it?

Thanks.

.

Relevant Pages

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