Themes and Templates with Apache Struts 2: "In this article by Dave Newton we will learn how to modify the built-in themes and templates of Struts 2. We'll introduce a requirement to a recipe entry screen to have some different behavior when there is a validation error. The default behavior now is to change the style of the label and print the error message above the field. We'd like to highlight the entire row as a gentle reminder that our user has left out something important."