Clear database for android app

public class Repository {
    public void deleteAllExcursions() {
        databaseExecutor.execute(() -> {
            mexcursionDAO.deleteAllExcursions();
        });
    }

    public void deleteAllVacations() {
        databaseExecutor.execute(() -> {
            mvacationDAO.deleteAllVacations();
        });
    }
}

public interface ExcursionDAO {
    @Query("DELETE FROM excursion")
    void deleteAllExcursions();
}

public interface VacationDAO {
    @Query("DELETE FROM vacations")
    void deleteAllVacations();
}

public class VacationActivity extends AppCompatActivity {

   @Override
    protected void onCreate(Bundle savedInstanceState) {
        clearAllExcursions();
        clearAllVacations();
    }


 private void clearAllExcursions() {
        repository = new Repository(getApplication());
        repository.deleteAllExcursions();
        Log.d("VacationActivity", "All excursions cleared.");
    }

    private void clearAllVacations() {
        repository = new Repository(getApplication());
        repository.deleteAllVacations();

    }
}