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class MyThreadPoolExecutor extends ThreadPoolExecutor {
    public MyThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime,
            TimeUnit unit, BlockingQueue<Runnable> workQueue) {
        super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue);
    }
    
    @Override
    public void afterExecute(Runnable r, Throwable t) {
        super.afterExecute(r, t);
        // If submit() method is called instead of execute()
        if (t == null && r instanceof Future<?>) {
            try {
                Object result = ((Future<?>) r).get();
            } catch (CancellationException e) {
                t = e;
            } catch (ExecutionException e) {
                t = e.getCause();
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        }
        if (t != null) {
            // Exception occurred
            System.err.println("Uncaught exception is detected! " + t
                    + " st: " + Arrays.toString(t.getStackTrace()));
            // ... Handle the exception
            // Restart the runnable again
            execute(r);
        }
        // ... Perform cleanup actions
    }
}

final class MyTask implements Runnable {
    @Override public void run() {
        System.out.println("My task is started running...");
        // ...
        throw new ArithmeticException(); // uncatched exception
        // ...
    }
}

public class ThreadPoolExecutorHandler {
    public static void main(String[] args) {
        // Create a fixed thread pool executor
        ExecutorService threadPool = new MyThreadPoolExecutor(10, 10, 0L, TimeUnit.MILLISECONDS,
                new LinkedBlockingQueue<>());
        threadPool.execute(new MyTask());
        // ...
    }
}