Java Thread return data

[m6s]

MovAvg run = new MovAvg(_symbol, this, SumDays.SMALL );
threadExecutor.execute(run);
Collection<Double> vl = run.getMovAvg().values();
        Iterator itr = vl.iterator();
        while(itr.hasNext()){
            System.out.println(itr.next());
        }

This snippet generates, or at least tries to generate a Moving Average. The MovAvg is a Runnable class. I send in the symbol, the values ( a class of inherited treemap values) and the period of days ).
In order to take back the results I try the to build a Collection and then generate an iterateion on the values of this collection.

First: I have a Null exception, which I believe it has to do with the fact, that the thread might not have started yet? If so, how can I handle that the next step will be executed right after the execution of the thread ? Well what I don't see is how to "plug-in" wait, notify thing...

Second: Is it right the way I am trying to collect the values? If I have secured that the thread will run before we reach to this point...

Thank you...

[Tassos Souris]

Have a look at the java.util.concu rrent.Callable interface.
It is similar to Runnable (in the sense that they can be executed by another thread), with the exception that Callable can return a result and throw a checked exception.
Also, have a look at the Future interface that provides you with methods to check if the computations are complete, to wait, and to retrieve the result of the computation specified by a Callable.

Take a look at the Java concurrent package API. There are some examples there.

[m6s]

Se efharisto.. Mallon kanei tin douleia tou...alla prepei na to dokimaso vevea...

[r035198x]

You are not allowed to use languages other than English in this forum.

[m6s]

OK, thank you...Probably does the work but I should try first..though

[Tassos Souris]

You are not allowed to use languages other than English in this forum.

You don't promote internationaliz ation here :-)

[JosAH]

You don't promote internationaliz ation here :-)

It's just a practicality; if the majority of the people online would've spoken Dutch, we'd all be speaking Dutch here ;-) English is the "Lingua Franca" of the net.

kind regards,

Jos