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.
Originally posted by Paul Lachance: Isn't it also true that any exception thrown at runtime will also extend RuntimeException (whether progammer or JVM initiated)? I would think both A and B are implied...
No. Runtime is the only time your code can throw anything.
RuntimeException is simply a subclass of Exception, and serves as a distinction between checked and unchecked exceptions.