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

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

by Vaskaran Sarcar
December 2018
Intermediate to advanced content levelIntermediate to advanced
512 pages
8h 51m
English
Apress
Content preview from 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_15

15. Strategy (Policy) Pattern

Vaskaran Sarcar1 
(1)
Bangalore, Karnataka, India
 

This chapter covers the strategy pattern.

GoF Definition

Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from the clients that use it.

Concept

Suppose there is an application where you have multiple algorithms and each of these algorithms can perform a specific task. A client can dynamically pick any of these algorithms to serve its current need.

The strategy pattern suggests that you implement these algorithms in separate classes. When you encapsulate an algorithm in a separate class, you call ...

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Publisher Resources

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