This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Please don't post in all caps. It is considered shouting on the internet. Also, try to use a descriptive subject for your post to make it more likely someone will read it quickly. This whole forum is about JSP.
Have you looked at the Calendar class in Java? It can get you the current date and do calculations (like subtract a month.)