JAVAFX Service creates new threads

Francisco Javier Godino jgodino at
Sat Sep 6 20:37:25 UTC 2014

Hi Kevin:

It was resolved with your help.
I included this lines:

ExecutorService executorService = Executors.newSingleThreadExecutor();


Thanks a lot!

Francisco Javier

On Saturday, September 6, 2014 2:32 PM, Kevin Rushforth <kevin.rushforth at> 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:"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 

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