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.
Sub class reference can be assigned to super class reference. But super class reference cannot be assigned to sub class reference(without explicit casting).Why it is so? Can anyone explain me in detail? Thanks, Senthil