Difference between Executors.newFixedThreadPool(1) and Executors.newSingleThreadExecutor()

Question

My question is : does it make sense to use Executors.newFixedThreadPool(1)??. In two threads (main + oneAnotherThread) scenarios is it efficient to use execut

Answer 1

Sometimes need to use Executors.newFixedThreadPool(1) to determine number of tasks in the queue

private final ExecutorService executor = Executors.newFixedThreadPool(1);

public int getTaskInQueueCount() {
    ThreadPoolExecutor threadPoolExecutor = (ThreadPoolExecutor) executor;
    return threadPoolExecutor.getQueue().size();
}