This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
SCJP 6 [86%], OCPWCD [84%], OCEJPAD [83%]
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Joined: Dec 30, 2010
So correct me if wrong but I think the first constructor Building() of the superclass Building is used b/c the compiler looks for the no-arg constructor (basing this logic off of question 2 pg. 172 explanation).