Skip to Main Content
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_20

20. State Pattern

Vaskaran Sarcar1 
(1)
Bangalore, Karnataka, India
 

This chapter covers the state pattern.

GoF Definition

Allow an object to alter its behavior when its internal state changes. The object will appear to change its class.

Concept

Suppose that you are dealing with a large-scale application where the codebase is rapidly growing. As a result, the situation becomes complex and you may need to introduce lots of if-else blocks/switch statements to guard the various conditions. The state pattern fits in such a context. It allows your objects to behave differently based on the current state, and you can define state-specific behaviors with different ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

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

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

Vaskaran Sarcar
Spring Microservices in Action, Second Edition

Spring Microservices in Action, Second Edition

John Carnell, Illary Huaylupo Sanchez
Java Concurrency in Practice

Java Concurrency in Practice

Brian Goetz, Tim Peierls, Joshua Bloch, Joseph Bowbeer, David Holmes, Doug Lea

Publisher Resources

ISBN: 9781484240786Purchase LinkPublisher Website