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This document contains a set of questions and answers on Java concurrency. The questions cover a wide range of topics, from basic concepts to advanced techniques.
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1. What is the Exchanger class?
2. What is the difference between a read-write lock and a mutex?
3. What is the CompletableFuture class?
4. What is a thread pool?
5. What is the StampedLock class?
6. What is the ForkJoinPool class?
7. What is the difference between a reentrant and a non-reentrant lock?
8. What is the difference between a thread and a process?
9. What is the difference between a synchronized and a volatile variable?
10. What is the difference between a blocking and non-blocking I/O operation?
11. What is the difference between a semaphore and a mutex?
12. What is the Phaser class?
13. What is the Java Memory Model (JMM)?
14. What is a deadlock?
15. What is a race condition?
16. What is the CountDownLatch class?
17. What is the Reactive Streams API?
18. What is the CyclicBarrier class?
19. What is the difference between a fair and an unfair lock?