Concurrency basics · interview question
Which of the following scenarios would require both 'volatile' and synchronization?
Multiple choiceHardchapter-15-curatedpremiumconcurrencythe-volatile-keyword
Answer and explanation
Correct answer
A. Atomic update of a shared counter
Why
Volatile ensures visibility, but atomic updates require synchronization to prevent race conditions. Volatile alone cannot provide atomicity for compound actions.
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?