Inheritance and composition are two programming techniques developers use to establish the relationship between classes and objects. Whereas inheritance derives one class from another, composition ...

We will focus on the relationship between polymorphism and Java inheritance. The main thing to keep in mind is that polymorphism requires an inheritance or an interface implementation. You can see ...

This article is excerpted from Rails for Java Developers, by Stuart Halloway and Justin Gehtland, with permission of The Pragmatic Programmers. All rights reserved ...