Class to design

Hi All
I am new to the concept of designs. Even though I have some small knowledge about the concepts of design.
Can any one tell me how to convert a package ( a set of calsses ) to the design mode.
I have heard of somewhere that there are some design tools that can convert the classes to the design or uml models.
Please guide me.
Vijay

Are you talking about- reverse engineering code- into UML? If that be you could use a modelling tool like JTogether.
HTH
Sanjay

Reverse engineering from classes (or even the source)
only gives you part of the picture. It's like getting
only the Javadoc for an entire Java system, and expecting
to learn the system and its use from just that.
All the dynamic behavior of the system is missing
from the reverse engineered model. Someone with
inside knowledge still has to go through and document
what the system actually does and how.
Last year there was an article in Java Report
about a technique to use the new
debugging/profiling facilities and actually build
interaction diagram type information on the fly
against a running system.
The author was looking for folks interested in
working with him on it. I did not have the time
and did not respond.
Does anyone else have any information on that
project or something like it?
Thanks,
Joe

Thanks All,
I got a freeware from object-insight called JVISION which solved my problem.