What are the possible reason for a java.util.concurrent.RejectedExecutionException in a SingleThreadExecutor

Question

I create the following executor in a singleton:

   final private ExecutorService executor = Executors.newSingleThreadExecutor(new ThreadFactory() {
                 


        

Answer 1

Maybe you should use a thread pool instead of using a single executor.

    executor = new java.util.concurrent.ThreadPoolExecutor(30, 30, 60, TimeUnit.SECONDS, new LinkedBlockingQueue(), new ThreadFactory() {
        final AtomicInteger threadNumber = new AtomicInteger( 1 );
        @Override
        public Thread newThread(Runnable r) {
            return new Thread(r, "Thread No : " + threadNumber.getAndIncrement());
        }
    });