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.
I wonder if there are any abstract classes in the Java API ? I have not encountered with one till now but would like to know if there are any.
All your expert comments would help increase my/everyone's knowledge.