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.
mmm, i am not sure what you wish to intend by List<? super Object> This means either a superclass of Object(No class qualifies this rule) or the Object itself. Since, there is no superclass of Object, its as good as saying List<Object> If you do the above, everything should work fine.