I spent the end of last week on a Patterns course given by Dr Heinz of JavaSpecialists fame. Although I have used patterns for nearly all of my career it seem like a good oppotunity to revise what I though I already new. Not something you really get a chance to do day to day.
In general the course was well presented and Dr Heinz is a good speaker. I suspect that I could personally have done with more detail on different ways on implementing patterns; but we were in a mixed group so he could only go into so much detail. It was also useful to talk over the motivation for each pattern and it put a few things straight in my head.
We did the entire course using JDeveloper, and although I did log some bugs things are looking pretty stable these days. Dr Heinz did say he liked the expanded layout that is unique to the JDeveloper modelling tools. I wrote the original version of those, although the design idea is credit to Duncan Gittins, but the concept is still the same in the "new" generation modelers in JDeveloper 11.
Just to prove we were using JDeveloper in anger here is a nice picture of the Mememto pattern that we drew in class, in this case modelling virtual experimental rats:
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