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.
Here is my post about how annotations work in Java and How you can implement custom annotations in Java. It has sample code as well. Which gives more clarity of the concept. Do vote for it if you like it