Hands-On Design Patterns with Kotlin

Design patterns become more useful when you can see how they work in the language you actually use. In Hands-On Design Patterns with Kotlin, Alexey Soshin starts with Kotlin’s core features and then puts familiar software patterns into practice, showing how the language’s idioms affect their implementation.

The book moves from classic object-oriented patterns toward functional, reactive, and concurrent approaches. It is written for developers with basic Java or Kotlin knowledge—not for readers looking for their first introduction to programming.

Start with Kotlin, then put patterns to work

An opening section introduces Kotlin syntax and concepts such as null safety, functions, classes, data classes, and extension functions. That grounding gives readers a way to consider not only what a pattern does, but how Kotlin can express it.

Explore the classic pattern families

The book covers creational patterns including Factory Method, Abstract Factory, Builder, and Prototype; structural patterns such as Decorator, Adapter, Bridge, and Facade; and behavioral patterns including Strategy, State, Command, Observer, and Visitor. The examples connect these recognized approaches to Kotlin code and its language features.

Move beyond object-oriented design

Later material turns to functional programming and expands into reactive and concurrent design patterns. Threads and coroutines are part of this broader treatment, giving readers a path from familiar design principles toward the challenges of coordinating work and building responsive applications.

For Kotlin developers refining their approach

Developers who already know the basics of Java or Kotlin can use this book to study pattern choices, compare implementation styles, and build a stronger vocabulary for discussing maintainable software. Its practical focus makes it especially relevant to programmers who want to connect design ideas with the everyday work of writing Kotlin.