“The course structure saved me weeks. I recommend it to any dev who wants to level up.”
Sarah M.
Backend developer, Paris
Popular
Advanced
Java Concurrency Masterclass
4.8(89 reviews)
6-8 weeks
Advanced
199,00 €249,00 €one-time payment
Concurrency is the most complex topic in Java — and the most sought in interviews. This masterclass covers threads, executors, structured concurrency (Java 21), profiling, and safe optimizations. You will build a complete async job runner with retries, idempotency, and observability. Advanced course for developers who want to master multithreading without the bugs.
Technologies
Java 21JFRasync-profilerJMH
What you will learn
Threads, synchronized, volatile and happens-before
ExecutorService, CompletableFuture and Fork/Join
Virtual threads and structured concurrency (Java 21)
Profiling with JFR and async-profiler
Full project: Async Job Runner
Production patterns: circuit breaker, backpressure
Reviews
What learners say
“The labs are at the right level — no copy-paste, you actually think. Exactly what I was looking for.”
James K.
Fullstack dev, London
“I had a technical interview the week after. The concepts really stuck.”
Yuki T.
Tech lead, Lyon
“Pro-level training, no fluff. The checklists and project code are my go-to reference.”
Léo D.
Java developer, Brussels
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