Question

I am writing an app that will make use of multiple threads. There is main thread that is launching another threads. What i want to acomplish is when one of the launched threads throws an exception, the main thread should stop launching threads. It looks more or less like this:

class SomeClass {
boolean launchNewThread = true;
public static void main() {
    while (launchNewThread) {
        try {
            AnotherClass.run();
        } catch (CrossThreadException e) {
            launchNewThread = false;
        }
    }
}
}

class AnotherClass implements Runnable {
    public void run() {
        if (a=0) throw new CrossThreadException();
}

}

Answer 1

You can also use a listener as described in How to throw a checked exception from a java thread?

When an exception is thrown inside one of the child threads, you could call a method like listener.setLaunchNewThread(false) from the child thread which will change the value of your boolean flag in the parent thread.

On a side note, calling AnotherClass.run() does not start a new thread but only call the run method from AnotherClass within the same thread. Use new Thread(new AnotherClass()).start() instead.