Concurrency in Java: From Basics to Advanced Techniques

The book "Concurrency in Java" is a comprehensive practical guide that will help you master one of the most complex yet critically important topics in Java development. The author, experienced Java architect Alexey Sokolov, systematically guides the reader from basic concepts to advanced techniques for working with multithreading and parallel computing.

What is this book about?

You will learn how to properly create and manage threads, avoid race conditions and deadlocks, and effectively use thread pools and asynchronous tasks. Special attention is given to modern Java tools: the java.util.concurrent package, Fork/Join and CompletableFuture frameworks, as well as atomic variables and non-blocking algorithms. Each chapter contains not only theory but also real code examples with explanations that can be immediately applied in a project.

Who is this book for?

• Junior developers who want to understand how threads and synchronization work and learn to write safe multithreaded code.
• Middle developers seeking to deepen their knowledge of performance, scaling, and debugging concurrent applications.
• Senior developers and architects looking for advanced design patterns for high-load systems and distributed computing.

What will you learn?

• Fundamentals of the Java Memory Model (JMM) and visibility of changes between threads.
• Working with Lock, Condition, ReadWriteLock, Semaphore, and other synchronizers.
• Creating and configuring thread pools (ThreadPoolExecutor, ForkJoinPool).
• Asynchronous programming with CompletableFuture and reactive approaches.
• Performance optimization and profiling of concurrent code.
• Common mistakes and how to prevent them, including deadlock, livelock, and starvation.
• Practical patterns: Producer-Consumer, Thread Pool, Future/Promise, Actor-like models.

Why should you read this book?

Concurrency is not just "another feature" of Java. It is the foundation for creating fast, responsive, and scalable applications. The book is written in a lively style, with an emphasis on practice and real-world cases from industrial development. You will not only gain a theoretical foundation but also learn to apply it in practice, avoiding common pitfalls. After reading, you will be able to confidently design and implement complex multithreaded systems that work stably and efficiently.

The book is suitable both for self-study and for use as a reference. All code examples are available in the repository, allowing you to immediately experiment and reinforce the material.