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.
There is no chapter in the book on functional programming or closures, etc. However, the primary premise of the book is that object-oriented programming is not a paradigm unto itself and encapsulates various other development paradigms - which is discussed throughout the book.