Java Concurrency 面试题与答案
问题 11. Explain the concept of the volatile keyword in Java.
The volatile keyword ensures that a variable's value is always read and written from and to the main memory, preventing thread-local caching.
问题 12. What is the purpose of the java.util.concurrent package?
The java.util.concurrent package provides a framework for concurrent programming, including high-level abstractions such as Executors, Concurrent Collections, and synchronization utilities.
问题 13. Explain the concept of the ReentrantLock class.
ReentrantLock is an implementation of the Lock interface that allows a thread to acquire the lock multiple times without deadlocking.
问题 14. What is the purpose of the AtomicInteger class?
AtomicInteger provides atomic operations for integer variables, ensuring that operations are performed in an atomic and thread-safe manner.
问题 15. Explain the concept of the CountDownLatch class.
CountDownLatch is a synchronization aid that allows one or more threads to wait until a set of operations in other threads completes.
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