In this first half of “Understanding the Java Persistence API,” you saw how you can apply object-oriented concepts like inheritance and event callbacks using JPA.

It is just a tweak you can make to a java object through reflection. In this article I will show you how to break some of the object oriented concept using reflection.

Object-oriented systems are usually partitioned into layers of related responsibilities and only dependencies in one direction are allowed, from higher layers (more specific, less reusable) to lower ...