Semaphore in Java is part of the java.util.concurrent package and is used to manage access to a shared resource by multiple threads. It controls how many threads can access a particular resource simultaneously.
Time limit: 0
Quiz Summary
0 of 15 Questions completed
Questions:
Information
You have already completed the quiz before. Hence you can not start it again.
In which package is the Semaphore class available?
Correct
Incorrect
Question 3 of 15
3. Question
What does the acquire() method do in a Semaphore?
Correct
Incorrect
Question 4 of 15
4. Question
What happens if no permits are available and a thread calls acquire()?
Correct
Incorrect
Question 5 of 15
5. Question
Which method is used to release a permit in a Semaphore?
Correct
Incorrect
Question 6 of 15
6. Question
What type of Semaphore can be created using the constructor Semaphore(int permits, boolean fair)?
Correct
Incorrect
Question 7 of 15
7. Question
What does availablePermits() method return?
Correct
Incorrect
Question 8 of 15
8. Question
Which scenario best fits the use of a Semaphore?
Correct
Incorrect
Question 9 of 15
9. Question
What will happen if release() is called without a prior acquire()?
Correct
Incorrect
Question 10 of 15
10. Question
Which of the following is true about Semaphore fairness policy?
Correct
Incorrect
Question 11 of 15
11. Question
What is the default fairness setting in Semaphore?
Correct
Incorrect
Question 12 of 15
12. Question
Which method can be used to acquire multiple permits at once?
Correct
Incorrect
Question 13 of 15
13. Question
Which of the following is NOT a method of the Semaphore class?
Correct
Incorrect
Question 14 of 15
14. Question
What is the risk of increasing permits using release() unnecessarily?
Correct
Incorrect
Question 15 of 15
15. Question
How do Semaphores differ from Locks in Java?
Correct
Incorrect
Summary
The Java Semaphore class is a powerful concurrency tool used to control access to shared resources using permits. It plays a vital role in multithreaded applications where resource limitation is necessary, such as connection pools, task queues, or IO management.
At QuizOrbit, our team specializes in fun, informative quizzes across topics like general knowledge, technology, and entertainment. Boost your knowledge with our expert-designed quizzes.
