Number of working threads using java executor framework

[arpan mukherjee]

I'm creating a java thread pool using java 1.5 executor framework.

private ExecutorService executorService = Executors.newFixedThreadPool(threadPoolSize);
public <T> Future<T> submit(Callable<T> task) {
		return executorService.submit(task);
}

Now I want to get the number of working thread at runtime. Is there any java api available to do this using java 1.5 executor framework?

[thushara wijeratna]

i think this is difficult to get as the design goals of the Executor framework was to largely hide the underlying thread details from the user.
perhaps you can describe what you are trying to do, and we can think of another way to do that?