BlueVoodoo writes "Java 5 added a number of powerful language features: generics, enumerations, annotations, autoboxing, and the enhanced for loop. Even if you're stuck on JDK 1.4, you can still use generics. Use Java and theory to learn how."
% A bank is a place where they lend you an umbrella in fair weather and ask for it back the when it begins to rain. -- Robert Frost