CODEWITHSUNDEEP
javamultithreadingexecutorservice
sdgfsdh
sdgfsdh

Reputation: 37095

Is there an ExecutorService that creates a new thread for every task?

I need to unit-test some functionality that works across threads, for which I need to guarantee that two jobs are run on different threads.

Using Executors.newCachedThreadPool() introduces a race-condition, because the test may or may not use the cached thread-pool.

Is there an ExecutorService that always uses a new thread?

Upvotes: 7

Views: 2202

Answers (2)

wilmol
wilmol

Reputation: 1920

As of JDK 19 (preview) you can use Executors.newThreadPerTaskExecutor.

Upvotes: 6

dcsohl
dcsohl

Reputation: 7406

Use a java.util.concurrent.ThreadPoolExecutor with a corePoolSize of 0 and a keepAliveTime of 0. This will make new tasks spawn a new thread, and threads will be killed immediately after tasks are terminated.

For example: 

final ExecutorService executorService = new ThreadPoolExecutor(
    0, 2, 0, TimeUnit.SECONDS, new SynchronousQueue<>());

executorService.submit(task1);
executorService.submit(task2);

Upvotes: 16

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