Quick Answer
synchronized: built-in, simpler syntax, automatic lock release. ReentrantLock: explicit lock()/unlock() (must use try-finally), tryLock() with timeout (avoids deadlock), lockInterruptibly(), fair mode, multiple Condition objects. ReentrantReadWriteLock: multiple concurrent readers, exclusive writer - great for read-heavy shared data. Use synchronized for simple cases, ReentrantLock for complex concurrency requirements.
Answer
synchronized is simple and blocks until a lock is released. ReentrantLock provides tryLock(), timeouts, fairness, and multiple conditions. ReentrantLock offers more control and flexibility.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
