Thursday, October 17, 2019

newsinglethreadexecutor vs newfixedthreadpool

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

    * @param nThreads the number of threads in the pool
     * @return the newly created thread pool
     * @throws IllegalArgumentException if {@code nThreads <= 0}
public static ExecutorService newFixedThreadPool(int nThreads) {
        return new ThreadPoolExecutor(nThreads, nThreads,
                                      0L, TimeUnit.MILLISECONDS,
                                      new LinkedBlockingQueue<Runnable>());

 * Unlike the otherwise equivalent
     * <tt>newFixedThreadPool(1)</tt> the returned executor is
     * guaranteed not to be reconfigurable to use additional threads.
     * @return the newly created single-threaded Executor
public static ExecutorService newSingleThreadExecutor() {
        return new FinalizableDelegatedExecutorService
            (new ThreadPoolExecutor(1, 1,
                                    0L, TimeUnit.MILLISECONDS,
                                    new LinkedBlockingQueue<Runnable>()));

No comments:

Post a Comment