# 15 Common Software Design Patterns Explained with Java Examples

DevFeed: [15 Common Software Design Patterns Explained with Java Examples](<https://devfeed.tech/articles/every-important-design-pattern-explained-in-18-minutes-33565.md>)

Original publisher: [Read original article](<https://blog.algomaster.io/p/every-important-design-pattern-explained>)

Author: Ashish Pratap Singh

Published: 2026-08-25T04:01:49Z

Content type: tutorial

Language: en

Sources: [AlgoMaster Newsletter](<https://devfeed.tech/sources/algomaster-newsletter.md>)

Topics: [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [Software Engineering](<https://devfeed.tech/topics/software-engineering.md>), [Java](<https://devfeed.tech/topics/java.md>), [Programming](<https://devfeed.tech/topics/programming.md>)

Tags: [article](<https://devfeed.tech/tags/article.md>), [code](<https://devfeed.tech/tags/code.md>), [design](<https://devfeed.tech/tags/design.md>), [design-patterns](<https://devfeed.tech/tags/design-patterns.md>), [java](<https://devfeed.tech/tags/java.md>), [programming](<https://devfeed.tech/tags/programming.md>), [software-design](<https://devfeed.tech/tags/software-design.md>)

## AI overview

This tutorial explains 15 commonly used software design patterns, covering their categories and practical use cases. It uses Java code examples and discusses patterns including Singleton, Builder, and Factory Method, along with cautions about global access and hidden dependencies.

## Source excerpt

In this article, I'll break down 15 of the most important design patterns I've come across in interviews and throughout my 9+ years as a Software Engineer.