Quiz for Executor Framework

Q1: Which package provides the Executor framework in Java?

A. java.io B. java.lang C. java.util.concurrent D. java.thread

Q2: What does the Executor interface represent?

A. A new Thread B. A thread pool manager C. An object that executes submitted tasks D. A monitor lock

Q3: Which method is defined in the Executor interface?

A. execute() B. run() C. submit() D. start()

Q4: Which class provides factory methods for creating executor services?

A. Executors B. ExecutorFactory C. ThreadBuilder D. TaskManager

Q5: What does newFixedThreadPool(n) create?

A. n threads that execute sequentially B. A pool with exactly n threads C. A queue of threads D. One thread that runs n tasks

Q6: Which method shuts down the ExecutorService gracefully?

A. shutdown() B. stop() C. terminate() D. close()

Q7: Which method submits a task and returns a Future?

A. execute() B. submit() C. invoke() D. runTask()

Q8: What does the Future interface represent?

A. Thread configuration B. A task scheduler C. The result of an asynchronous computation D. A task canceler

Q9: Which method blocks until the task completes and returns the result?

A. result() B. get() C. read() D. wait()

Q10: Which thread pool is suitable for executing short-lived tasks?

A. SingleThreadExecutor B. CachedThreadPool C. FixedThreadPool D. ForkJoinPool