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.
We don't just do other people's homework here. Please tell us what you have done yourself to solve this, show us your code, and then explain exactly where you get stuck, and we'll help you get further with it.