@Override
public int hashCode() {
int result = id;
result = 31 * result + (name != null ? name.hashCode() : 0);
result = 31 * result + (surname != null ? surname.hashCode() : 0);
result = 31 * result + hoursWorkedThisMonth;
result = 31 * result + (state != null ? state.hashCode() : 0);
result = 31 * result + (currentCity != null ? currentCity.hashCode() : 0);
result = 31 * result + (currentTruck != null ? currentTruck.hashCode() : 0);
return result;
}
