This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
I have worked with servlets but have only ready about JSP. If I display a screen and the user inputs some values do I do a validity check in JSP or do I do it in a servlet. This is a very general question.