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.
What is the difference(technical,implementation wise,design scenario ... any) between an abstract class with all abstract methods and an interface? Also, an abstract class with all non-abstract methods and a concrete class? Thanks for replying..