Computer scienceProgramming languagesJavaWorking with dataMultithreadingTask processing

Executors

Supplying a task

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Suppose you have an instance of ExecutorService.

ExecutorService executor = Executors.newSingleThreadExecutor();

The main thread supplies two tasks to it:

Runnable task = () -> {
    try {
        TimeUnit.MILLISECONDS.sleep(1000);
        System.out.println("Hello!");
    } catch (Exception e) {
        e.printStackTrace();
    }
};

executor.submit(task);
executor.submit(task);

Select all correct statements:

Select one or more options from the list

The main thread will not wait for the completion of submitted tasks

This code will not work if we create an executor with four threads in the pool instead of this executor

This executor can perform both tasks in parallel

This executor does not stop after completing both tasks

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