This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
How would you know if the page is already POSTed? Say example, i have a page and clicking on the submit button will redirect me to the same page, but i have a code there that check if the page is already posted. Thanks.