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Like many others, I would like to thank you for truly awesome tutorials. I've been spoiled. I try to look at other tutorials on more advanced topics, but they simply aren't as clear or comprehensive.
However, out in the real world I am coming up on the limitations of what we learned here. It seems that everyone I speak with actually are using Abstract Classes and Interfaces extensively in their real-world programming. I can maybe wrap my brain around what these are and how to use them, but I simply cannot find any tutorial on how I would build these Abstract Classes and Interfaces using the Test First method we learned in the beginner and persistence videos.
Can you suggest a good tutorial for how to use Test First method to develop an abstract super class? How do I use JUnit testing to develop interfaces?
Any suggestions on where to look to learn this apparently central aspect of real-world Java programming?
Unfortunately, I've been away from the Java world for a few years now, so I am not up on tutorials for Abstract Classes and Interfaces. I suggest you look at JavaRanch.com. That is a very active site and has a lot of folks who really know their Java and Java resources. Good luck. Mark