Concurrency basics · interview question
What does trying to acquire a lock using ReentrantLock's tryLock() method if the lock is not available evaluate to?
Multiple choiceEasychapter-15-curatedpremiumconcurrencysynchronized-and-locks
Answer and explanation
Correct answer
A. The method returns false.
Why
The tryLock() method attempts to acquire the lock immediately, and if the lock is not available, it returns false without blocking the thread.
Test yourself on Concurrency basics
A free test with instant, explained results. No account needed.
More Concurrency basics questions
- How can you avoid deadlocks when using multiple ReentrantLocks in a method?
- What does the 'volatile' keyword guarantee in Java?
- Why might using 'volatile' alone be insufficient for ensuring thread safety when updating a shared counter?
- Consider the following code snippet. What issue might occur if 'flag' is not declared as 'volatile'?
- When using synchronized blocks, how can you ensure fairness among threads?
- How would you explain a common use case for 'volatile' variables in an interview?