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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of the ExecutorService?
💡 Hint: Think of it as managing multiple workers.
Question 2
Easy
What type of task can a Callable interface execute?
💡 Hint: Recall that Callable can return something.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does ExecutorService manage?
- A single thread
- A pool of threads
- No threads
💡 Hint: Recall its main function: managing groups of tasks.
Question 2
True or False: A Callable can return a value.
- True
- False
💡 Hint: Think of what a function does when it 'calls' something back.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a multi-threaded application using ExecutorService that processes a list of numbers and returns their squares. Explain how you would handle exceptions during execution.
💡 Hint: Consider using a list and mapping each number to its square.
Question 2
Create a scenario in which a CountDownLatch may fail and explain why. How would you prevent this from happening in your design?
💡 Hint: Think about the logistics of timing for tasks.
Challenge and get performance evaluation