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.
A primitive array is indeed an Object, so you can clone() it, get a hashCode() for it, etc. java.util.Arrays is a separate class; note that all its methods are static. They are handy when working with arrays, but they're not methods you can call on arrays directly.