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.
But is there any way to avoid a Cache and also show a pdf using Content-Disposition as inline? . Because it is a security concern. Any other user using the work station can easily access the previous persons data.