This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
if you are writing a class A & that class is already extending a class B . and you are thinking that it has one superclass so it can't have another , you are thinking wrong ... because class B is extending Object class . So ultimately class A is a subclass of Object .