This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
I believe Daniel is asking that once he has written the JavaDoc for all the methods in an interface, how should he document the methods of the classes that implement it. I was unsure about this as well. Javadoc will automatically copy the comments from the interface for you if you omit javadoc in the implementation, but I was worried about that, so I added brief implementation comments with @see links to the interface, which had the verbose definition of the method contract.