There's a good tutorial on class diagrams for Java developers at
http://www.jasongorman.pwp.blueyonder.co.uk/tutorials/java/class/index.htm

I think its the first of a series. There's quite a few - some very
advanced ones - on that site aimed at C# programmers.

designman

[Moderator's note: it appears to only work in IE, as far as I can see]