JAVAFX Service creates new threads

[Kevin Rushforth]

You're welcome.

-- Kevin


Francisco Javier Godino wrote:
> Hi Kevin:
>
> It was resolved with your help.
> I included this lines:
>
> ExecutorService executorService = Executors.newSingleThreadExecutor();
>
> CapturadoraDeImagenService.getInstance().setExecutor(executorService);
>
> Thanks a lot!
>
> Francisco Javier
>
>
>
>
>
> On Saturday, September 6, 2014 2:32 PM, Kevin Rushforth 
> <kevin.rushforth at oracle.com> wrote:
>
>
> This is documented in the API docs for the Service class:
>
>     The Service by default uses a thread pool Executor with some
>     unspecified default or maximum thread pool size. This is done so
>     that naive code will not completely swamp the system by creating
>     thousands of Threads.
>
>
> You need to specify your own Executor if you want to change this 
> default behavior.
>
> -- Kevin
>
>
>
> Francisco Javier Godino wrote:
>> Hello:
>>
>> I have a issue with a Service. 
>> I developed thisService. 
>> It's an extension of Service:
>>
>>
>> public class MostrarImagenesService extends Service{
>> ...
>>
>> @Override
>>
>>     protected Task createTask() {
>>         return new Task() {
>>
>>             @Override
>>             protected Object call() throws Exception {
>>
>> ......
>>
>>                 return null;
>>                 
>>             }
>> }
>>
>>
>>
>> This is the way that I invoque the service:
>>
>>
>> switch (MostrarImagenesService.getInstance().getState()) {
>>
>> case READY:
>> MostrarImagenesService.getInstance().start();
>>    
>>
>> break;
>>
>> case SUCCEEDED:
>>
>>                                     
>> MostrarImagenesService.getInstance().restart();
>>                                             
>>                 break;
>>
>>         default:
>>
>>                 log.info("GrabadoraDeImagenesService State: Grabadora en Funcionamiento");
>>
>> }
>>
>>
>>
>> I see this in the log:
>>
>> [Thread-10] INFO  servicios.MostrarImagenesService  - MostrarImagenesService: call INICIO trama:00552
>>
>> the second time that i invoque the service:
>>
>> [Thread-14] INFO  servicios.MostrarImagenesService  - MostrarImagenesService: call INICIO trama:00553
>>
>> It is running over a new Thread (Thread 14).
>>
>>
>>
>> How I can avoid creating new thread?
>> This service will be constantly invoked.
>> Can this affect the VM?
>>
>> Thanks
>>   
>
>