This week's book giveaway is in the Other Open Source APIs forum. We're giving away four copies of Storm Applied and have Sean Allen, Peter Pathirana & Matthew Jankowski on-line! See this thread for details.
I am new to JSP. My work is i have a page with some text boxes and submit button. When the user enters data in the textboxes and submit, i need to check the value (like ID) in the first textbox is already in the database or not. If already available need to show error message and page not need to post back. If value is not available need to the next page.