Polymorphism—or an object’s ability to execute specialized actions based on its type—is what makes Java code flexible.Many design patterns created by the Gang Of Four rely on some form of ...

In Java, polymorphism results in code that is more concise and easier to maintain. This tutorial provides an overview of the four types of Java polymorphism, but our focus is subtype polymorphism.

From the standpoint of the compiler, the above code properly implements polymorphism and abides by the rules of inheritance in Java. However, this code fails to meet the philosophical and behavioral ...