ScheduledExecutorService

Question

please consider this code sample
service = Executors.newScheduledThreadPool(1);
          final ScheduledFuture<?> timeHandle = service.scheduleWithFixedDelay(new DownloadService(), 0, 10,
                    TimeUnit.SECONDS);
          service.schedule(new Runnable() {
               public void run() {
                    timeHandle.cancel(true);
          }, 365 , TimeUnit.DAYS);     Here I Start the process and this service variable is a global variable and when i want to stop service then i use shutdown method for stop this process
But it does not stop that process properly.can you give me a sample code for stopping that process.
i used This code.
service.shutDown();
What is the problem with this code.

Answer 1

It sounds like you may be confusing fixed rate with fixed delay, and/or not accounting for the slop in System.currentTimeMillis.
                 Time
          1         2         3         4         5
012345678901234567890123456789012345678901234567890
|-- E0 --||- E1 -|  |E2|      |----E3---||- E4 -|
|-- E0 --|  |- E1 -|  |E2|  |----E3---|  |- E4 -|The first line of executions is fixedRate = 10, so 10 millis from the start of one to the start of the next.
The second line is fixeDelay = 2, so 2 millis from the end of one to the start of the next.