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When I taught Java (some years ago) I used Karel J. Robot. It was a great way to teach both Java and OOP.

http://csis.pace.edu/~bergin/KarelJava2ed/Karel++JavaEdition...

Karel's great, it's how I first learned Java. Cuts down on all of the unnecessary stuff and boilerplate, and presents an easy way to learn programming logic and theory.

If anyone's looking for a good intro course to OOP and Java, CS106A at Stanford is great, and the lecture videos and course material is online: http://see.stanford.edu/see/courseinfo.aspx?coll=824a47e1-13...

I use the Karel J Robot examples with Greenfoot in my middle school classes once we start using Greenfoot. It's a great tool.

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