Learn Java with Math: Using Fun Projects and Games

© Ron Dai 2019

R. DaiLearn Java with Mathhttps://doi.org/10.1007/978-1-4842-5209-3_25

25. Interface – Total Abstraction

Ron Dai¹ 

(1)

Seattle, WA, USA

 

The concept of interface is a part of abstraction, one of the four OOP. characteristics. Abstraction is about an abstract design of common features, including operations of the object.

Interface is the blueprint of a class. However, it is neither a class nor an object. All methods defined in an interface are abstract. There are no implementation details allowed inside any method of the interface. The class that is going to implement the interface will take care of the actual implementation of the methods.

Let’s look at an example of an interface and classes implemented from it. Auto is a general term ...