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 a registerService which throws a RegistrationException if a username or email already exists in database.
On registration page, when user submits the form,I would like the user to see the message contained within the exception on the same page with the filled data, instead of forwarding them to an error page.