ProactiveHandler.java

final class MyTask implements Runnable {
    @Override
    public void run() {
        try {
            System.out.println("My task is started running...");
            // ...
            anotherMethod();
            // ...
        } catch (Throwable t) {
            System.err.println("Uncaught exception is detected! " + t
                    + " st: " + Arrays.toString(t.getStackTrace()));
            // ... Handle the exception
        }
    }

    private void anotherMethod() {
        throw new ArithmeticException();
    }
}

public class ProactiveHandler {
    public static void main(String[] args) {
        // Create a fixed thread pool executor
        ExecutorService threadPool = Executors.newFixedThreadPool(10);
        threadPool.execute(new MyTask());
        // ...
    }
}