Design patterns exercise in Java [closed]

Question

Hi I have an assignment to teach a team the subject of design principle. As a final exercise to this mini course, I thought to give them an exercise in design pattern, in Java. My idea is to give them a code written badly, and they should refactor it using several design patterns. I didn't find anything similar to that in my search (both in the web and in stack overflow).

Any references to something similar to what I'm looking for?

Thanks

Answer 1

One of the best sites out there : http://www.industriallogic.com/xp/refactoring/catalog.html

They basically show you code, and then the re-factored code. Its not going to be one big hopping pile of crap, but you can take an aggregate a couple and aggregate them together to form some ugly code, and then do the same to show the solution.

Answer 2

You can check this book "Refactoring: Improving the Design of Existing Code" of Martin Fowler. It contains examples of "smell" coding and provide solution to refactor it.