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 "convenience method" or "convenience class" generally means a class that doesn't do anything itself, but provides simplified access to other classes or groups of classes. For example, the "random()" method in java.lang.Math is a convenience method that provides a simple way to use the more powerful java.util.Random class.