Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

The Java Tutorial goes on to list bullets for when an abstract class should be considered and for when an interface should be considered. Unsurprisingly, these are derived from the previously ...

In Java, an "interface" is an abstract base class that only serves the purpose of a template for other classes. The Comparable interface defines methods that allow objects to be sorted based on ...