This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
My Questions is more about the concept of final keyword.
why we cannot extends final class in non-final class? or what the usage of final keywords with Class, Methods and variables? and what are conditions when we need to apply this key word with class, methods and variables?