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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_1

1. Singleton Pattern

Vaskaran Sarcar1 
(1)
Bangalore, Karnataka, India
 

This chapter covers the singleton pattern.

GoF Definition

Ensure a class only has one instance, and provide a global point of access to it.

Concept

A class cannot have multiple instances. Once created, the next time onward, you use only the existing instance. This approach helps you restrict unnecessary object creations in a centralized system. The approach also promotes easy maintenance.

Real-World Example

Let’s assume that you are a member of a sports team, and your team is participating in a tournament. Your team needs to play against multiple opponents throughout the tournament. ...

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Publisher Resources

ISBN: 9781484240786Purchase LinkPublisher Website