Computer scienceProgramming languagesJavaWorking with dataMultithreadingTask processing

ExecutorService

ExecutorService shutdown methods

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What do the shutdown() and shutdownNow() methods of an ExecutorService do?

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The shutdownNow() method tries to destroy the ExecutorService immediately, and it guarantees that all the running threads will be stopped at the same time.

There is no difference between shutdown() and shutdownNow().

The shutdown() method doesn't cause immediate destruction of the ExecutorService. It will make it stop accepting new tasks and shut down after all running threads finish their current work.

The shutdownNow() method tries to destroy the ExecutorService immediately, but it doesn't guarantee that all the running threads will be stopped at the same time.

The shutdown() method causes immediate destruction of the ExecutorService.

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