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© Kishori Sharan and Adam L. Davis 2022

K. Sharan, A. L. DavisBeginning Java 17 Fundamentalshttps://doi.org/10.1007/978-1-4842-7307-4_21

21. Interfaces

Kishori Sharan¹ and Adam L. Davis²

(1)

Montgomery, AL, USA

(2)

Oviedo, FL, USA

In this chapter, you will learn:

What interfaces are
How to declare interfaces
How to declare abstract, default, private, and static methods in interfaces
How to fully and partially implement interfaces in a class
How to evolve interfaces after they are published
How to inherit an interface from other interfaces
Using the instanceof operator with interfaces
What marker interfaces are
How interfaces can be used to implement polymorphism
How dynamic binding applies to method calls on interface-type variables
What functional interfaces ...

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