Java Threading · interview question
Which method in ExecutorService can be used to retrieve results of multiple tasks at once?
Multiple choiceMediumchapter-15-curatedpremiumjava-threadingexecutorservice
Answer and explanation
Correct answer
A. InvokeAll()
Why
The invokeAll() method in ExecutorService is used to execute a collection of tasks and retrieve their results. It blocks until all tasks have completed, returning a list of Futures holding their results.
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