class WaitForCounterTask implements Runnable {
    final SharedCounter sharedCounter;

    WaitForCounterTask(SharedCounter sharedCounter) {
        this.sharedCounter = sharedCounter;
    }

    @Override
    public void run() {
        try {
            sharedCounter.waitForCounterToReachFive();
        } catch (InterruptedException e) {
            System.out.println("The waiting thread was interrupted. Exits.");
            System.exit(1);
        }
    }
}