Hi,
Next to Rational Rose, you should have a look (if you have to run Windows-based applications) to Rational XDE (the professional edition for Java). A lot of improvement have been done at level of usuability (vs Rose), code RTE. Built-in, you will find: the web publisher feature that will allow you to publish your UML models into HTML web pages, a pattern engine that will help you to model and re-use common analysis/design solutions, a code template engine that could be used to automatically generate your own code sequelettons and bodies.
If you have the possibility to use the Plus edition, then you will be able to automatically generate sequence diagrams based on run-time information of yuou Java application.
Unfortunately, this product only runs on a windows platform but... since Rational has been taken over by IBM and that: IBM is pushing the Unix systems + XDE is based on Eclipse wich is running on MacOS X, I can bet that one day...
Until then you will have to use VirtualPC on mac, VMWare on Linux or (if obliged) have a wintel machines to run it.
PS: I believe that Borland jBuilder and Oracle jDeveloper (that run on MacOSX) have the possibility to generate class diagrams (only) from Java code.
Regards,
-Olivier.
