Concurrency in Java: From Basics to Multithreaded Applications

Modern applications must work quickly and efficiently, and for this you need to be able to properly use processor resources. The book "Concurrency in Java: From Basics to Multithreaded Applications" is a practical guide that will help you master one of the most complex yet important topics in Java development.

The author, Alexey Smirnov, a senior developer with 10 years of experience, consistently guides the reader from basic concepts to advanced techniques. You will learn not just to write multithreaded code, but to make it safe, predictable, and performant.

What you will learn from the book:

• Thread Basics: creation, lifecycle management, priorities, and daemons.
• Synchronization: the synchronized keyword, locks, monitors, and data race issues.
• Thread Pool and ExecutorService: how to efficiently manage tasks while avoiding resource leaks.
• Asynchronous Programming: CompletableFuture, Future, Callable, and working with asynchronous calls.
• Collections for Concurrent Access: ConcurrentHashMap, CopyOnWriteArrayList, queues, and semaphores.
• Multithreading Patterns: Producer-Consumer, Thread Pool, Lazy Initialization, and others.
• Testing and Debugging: how to write tests for multithreaded code, find deadlocks and race conditions.
• Performance: profiling, JVM tuning, lock optimization.

Who this book is for:

• Java developers who want to deepen their knowledge of multithreading.
• Programmers transitioning to Java from other languages (C#, Python, C++).
• Students and junior developers who want to learn concurrent programming from scratch.
• Senior engineers who need a reference for advanced techniques and optimization.

The book contains numerous code examples that can be run immediately and adapted to your own tasks. All examples are written for Java 17 and above, but most techniques are applicable to older versions as well.

After reading, you will be able to confidently design high-load systems, avoid common mistakes, and write code that works correctly in a multithreaded environment. This is not just theory — it is a tool for real-world work.

Recommended both for self-study and as a desktop reference for daily development.