removeTownsAndAddresses

private void removeTownsAndAddresses() {
        Scanner scanner = new Scanner(System.in);
        String townName = scanner.nextLine();

        this.entityManager.getTransaction().begin();

        try {
            Town town = this.entityManager.createQuery("FROM Town WHERE name = :townName", Town.class)
                    .setParameter("townName", townName)
                    .getSingleResult();
            List<Address> addresses = this.entityManager.createQuery("FROM Address WHERE town.id = :town_id")
                    .setParameter("town_id", town.getId())
                    .getResultList();
            addresses.forEach(this.entityManager::remove);
            this.entityManager.remove(town);

            System.out.printf("%d addresses in %s deleted",addresses.size(), townName);

        } catch (NoResultException e) {
            System.out.printf("No Town with name: %s", townName);
        }


        this.entityManager.flush();
        this.entityManager.getTransaction().commit();
    }