Question

I am using Callable, Executor and Future objects to invoke webservices in parallel from separate threads. After having executed all my webservice calls, I display the results in jsp.

Here I have a doubt: if one of the webservice calls fails, how can I show the results from the successful calls in jsp?

If one thread takes more time to execute in that situation I want to skip that response and show the rest of the results in jsp.

I tried to add a Thread.sleep(1000) in one webserice but the response is also delayed in jsp.

Answer 1

If you are using an executor service, you can terminate it with a timeout after having submitted all you callables:

executor.shutdown();
boolean terminated = executor.awaitTermination(1, TimeUnit.SECONDS);

And if you have stored the futures returned by the executor when submitting the jobs, you can loop over the list and check which task has not been completed:

if (!terminated) {
    for (Future f : futureList) {
        if (!f.isDone()) { System.out.println("This task " + f + " did not complete"); }
    }
}