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.
Code like this has been posted by the dozens in these forums before; do you have a question about it?
In the future, please UseCodeTags when posting code of an length. It's unnecessarily hard to read the code as it is, making it less likely that people will bother to do so. I have added these for you now.