UML Diagram generation tool

Not sure if this is right forum to post this question, but any kind of help would be appreciated.

I want a tool/freeware that would create a UML class diagram for a collection of classes/packages i am using in my project. Is there some kind of eclipse plugin or some other tool that would help me generate UML diagrams. I am using eclipse-jee-helios-win32.

You could try ArgoUML. I think it supports reverse engineering, though last time I used it it didn't offer much support for dynamic models.

StarUML can reverse engineer Java code and is freeware, but it is very buggy.

Sparx Systems Enterprise Architect is much better, it's not free but according to many it's the best in terms of price/features.

I am using Microsoft Visio software for creating UML diagrams, since it’s reverse engineering allows drawing UML diagrams from the source code. It is one of the best diagramming tools available. However, since it is not free software, I will recommend you to opt for Visio Trial that comes for FREE 60 days evaluation. Once you are comfortable with it, later you can opt for license copy.

You can try trail version of IBM RSA (Rational Software Architect)

I know it's not free .but it is for Students
you can try Oracle JDeveloper ...it's really helpful in such cases
it can also create ER diagram for your D.B

I would use Enterprise Architect from Sparx Systems as it is widely used as design tool for J2EE applications.

You can download trial version. You can google to get the link

Thank You
Nageswar

I use the objectAid UML plugin eclipse. Really useful since it does reverse engineering. And the nice part is that it is free. I'm not sure if i can post the link ... but google it and you will find it

I never use reverse engineering tools as the resulting diagrams tend to look sloppy. I prefere to go the extra mile and use a regular graphics editor (like Inkscape) and create a template with a symbol library by hand. That way I can make my diagrams look the way I intended.

Lots of tools out there...
Visio, Rational Rose, Enterprise Architect are the ones used widely in the Enterprise fraternity.
I use Visual Paradigm and also found it to be as effective a tool for generating UML diagrams.