Download the source code for example applications in this tutorial. Created by Jeff Friesen ... perform special tasks in the context of your Java classes. First, let’s consider the basic ...

The first half of this introduction to Java inheritance teaches you how to use the extends keyword to derive a child class from a parent class, invoke parent class constructors and methods ...

Java's open inheritance model can feel like an open invitation to unintended extensions. The problem becomes especially poignant when a switch statement or a nesting of if statements assumes that a ...