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Friday Java Quiz: PECS

Oops. I almost forgot it's Friday. Better put the quiz out.

This one should be easy because it's an open-book/open-web quiz. You are allowed to use everything at your disposal, Google, the free chapter of a book you downloaded from InfoQ last week, etc., to answer the question.

Q: What does PECS stand for?

The only requirement is that the answer has to be Java related.

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Re: Friday Java Quiz: PECS

PECS is surprisingly useful: http://fupeg.blogspot.com/2008/05/pecs-in-action.html

Re: Friday Java Quiz: PECS

Yep, very nice - covariance and contra-variance for busy Java developers :-) Can't wait to get my copy of the book.

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