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."
Ocean: A body of water occupying about two-thirds of a world made for man -- who has no gills. -- Ambrose Bierce