This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
1.What is the difference between Abstact classes and Interfaces.in program how we are going to decide which one to create?and when to use interfaces and when to use absract classes?(In programmatically)