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.
Barry Gaunt is right; there have been several threads about "Java is not fully object-oriented because it has primitive data types." You should find them if you do a quick search of Java In General (beginner) and JIG(advanced) and JIG(intermediate).