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.
I have complex validation logic I'd like to process by overriding the validate() method. If errors are found, how are they reported to the JSP? Right now, I can throw exceptions (which works) but leaves a stack trace on the screen instead of indicating which JSP fields have issues.