Question

What the right way to interrupt executor’s thread?
I’ve got this:
Thread class with name Worker with method:

public void run() {
    while(!(Thread.currentThread().isInterrupted()){
        System.out.println("work " + Thread.currentThread().getName() + ":" + Thread.currentThread().isInterrupted());
    }
}

And main class with:

ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
Worker worker = new Worker();                   
executorService.execute(worker);  

I try to call worker.interrupt(); or executorService.shutdownNow(); but my thread goes on and isInterrupted() is false.

Answer 1

Can you post all the relevant code? Based on the information you have given, I can’t reproduce the behaviour you describe. See below a SSCCE that works as expected – output:

work pool-1-thread-1:false
work pool-1-thread-1:false
work pool-1-thread-1:false
….
Thread has been interrupted

Code:

public class Test {

    public static void main(String[] args) throws InterruptedException {
        ExecutorService executorService = Executors.newFixedThreadPool(1);
        Worker worker = new Worker();
        executorService.execute(worker);
        executorService.shutdownNow();
    }

    public static class Worker extends Thread {

        public void run() {
            while (!Thread.currentThread().isInterrupted()) {
                System.out.println("work " + Thread.currentThread().getName() + ":" + Thread.currentThread().isInterrupted());
            }
            System.out.println("Thread has been interrupted");
        }
    }
}