This week's book giveaways are in the iOS and Features new in Java 8 forums. We're giving away four copies each of Barcodes with iOS: Bringing together the digital and physical worlds and Core Java for the Impatient and have the authors on-line! See this thread and this one for details.
If you're using earlier than Java 1.5, then you'd expect line 14 to throw an error, because you're assigining an int to an Integer reference. Autoboxing allows that, but autoboxing was introduced in 1.5.
You do realise that if that line works it's a pointless statement, though?