Java Design Patterns: A Hands-On Experience with Real-World Examples

© Vaskaran Sarcar 2019

Vaskaran SarcarJava Design Patternshttps://doi.org/10.1007/978-1-4842-4078-6_4

4. Factory Method Pattern

Vaskaran Sarcar¹ 

(1)

Bangalore, Karnataka, India

 

This chapter covers the factory method pattern.

GoF Definition

Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory method lets a class defer instantiation to subclasses.

Points To Remember

To understand this pattern, I suggest you go to Chapter 24, which covers the simple factory pattern. The simple factory pattern does not fall directly into the Gang of Four design patterns, so I put the discussion of that pattern in Part II of this book. The factory method pattern will make more sense if you start with the simple factory ...