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I'm working with someone who's looking to get back into programming after several years of IT support work. They know all the iterative programming basics and have used them frequently, but their only object-oriented programming experience was in college. The goal is to come up with a decent-sized project that is good for illustrating and practicing OO concepts. Has anyone ever used or thought of a good problem domain for an introduction to OO? I'm looking for a domain where concepts such as inheritance, abstraction and polymorphism really make sense and provide an advantage when modeling with the classes.
Of course, I did some googling and found the popular ATM and Address Book OO examples. They're both pretty good, but ATM is a little more complex than what I'm looking for. Address Book may be decent, but I think it might not be complex enough, or a clear enough domain for modeling objects. The goal is for the project to take a decent amount of effort to complete, not something that can be completely done in an afternoon or two.
As for implementation specifics, the project will be implemented as a Java console app with a minimal UI. Learning the OO concepts and how to implement them in Java is the primary purpose of this app.
I like casino game simulation. Simulation is one of the application domains that lead to the development of OO programming. Casino games are relatively simple but with some sophistication.
You can look at http://homepage.mac.com/s_lott/books/oodesign.html.
How about a text based adventure game?
Along the same lines as address book, a general catalog (cds, books, dvd, equipment & so on). The idea here, you have a base item that is extended by all the other types (inheritance) and each one can implement a specific interface for display and other purposes (polymorphism).
When I've taught other people how to understand OO-principles, I've asked them to relate to OO-programming as if they were building a house. A house has everything you need.