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Editorial Team
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Asked: 2026-05-28T03:06:56+00:00

I write application in Java using ThreadPool. Firstly I create new ThreadPool: private ExecutorService

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I write application in Java using ThreadPool. Firstly I create new ThreadPool:

private ExecutorService threadExecutor = Executors.newFixedThreadPool( 20 );

Then I create some Runnable objects. After that I execute my ThreadPool from time to time passing him the same Runnable object:

threadExecutor.execute(serverRunnable);

I execute this ThreadPool every 20 seconds. My problem is that threadExecutor stops working for some 5 minutes. It just don’t execute Runnable object. I notice that when I increase argument in:

Executors.newFixedThreadPool( 20 );

from 20 to e.g. 100 ThreadPool will work longer. Can anybody explain me why ThreadPool stop working?

Ps. I write this code in Android

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1 Answer

  1. Editorial Team

    firstly if you want to schedule as task for execution every 20 seconds try to use ScheduledThreadPoolExecutor instead : http://docs.oracle.com/javase/1.5.0/docs/api/java/util/concurrent/ScheduledThreadPoolExecutor.html

    It seems your runnable does not terminate – in this way it will exceed the 20 threads after a fixed amount of time. If your runnable terminates normally – you will be able to use your executor infinitely long.

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