If you've had any exposure to object-oriented programming, you're sure to have encountered entity relation diagrams (ERD) at some point. At its core, the ERD is a snapshot of all the players that make up an application and how those players relate to each other.
JAVA AND OOP
By its nature, there's no way you can program in Java without developing objects. After all, every Java program is really a class. But, as with any other tool, it can be used in a right way and a wrong way.
Most Java texts try to teach the basics of good object-oriented design, but if you come from a background of mainly developing applets, you might never have worked with more than one or two classes, or even objects. When you begin to develop ...