how can i stop all submitted tasks on ExecutorService

Question

i want to stop all the submitted tasks on an ExecutorService but i couldn't find a method to do it. any suggestions ?

Answer 1

看看ExecutorService.shutdownNow 。

Answer 2

for example, var pool is an ExecutorService.

//start a task 
pool.execute(task);

//
try {
    pool.shutdown();
    if(!pool.awaitTermination(awaitTime, TimeUnit.MILLISECONDS)){
        pool.shutdownNow();
    }
} catch (InterruptedException e) {
    pool.shutdownNow();
}

Answer 3

A deterministic shutdown for any task submitted to ExecutorService is possible only when the task itself is designed to respond to a external signal ( such as an Interruption on the thread running the task , or some other application designed flag ). ExecutorService itself only helps in as much as it will raise these signals for you ( when you call its shutdown() and shutdownNow() methods ) and notify all running tasks. If you want to be able to shutdown all tasks ( including the ones which are already running and not yet finished ) then design these tasks to have a cancellation policy.