Concurrency basics · interview question
What does the 'volatile' keyword guarantee in Java?
Multiple choiceEasychapter-15-curatedpremiumconcurrencythe-volatile-keyword
Answer and explanation
Correct answer
B. Visibility of changes to variables across threads
Why
The 'volatile' keyword ensures that changes to a variable are visible to all threads immediately. It does not guarantee atomicity for operations on the variable.
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?
- 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?
- How can you ensure that a thread releases a lock if it was not able to acquire it using tryLock()?