//nextPaymentDate.add(Calendar.DAY_OF_MONTH, 7);
else if (frequency == 3)
nextPaymentDate.addDays(14);
//nextPaymentDate.add(Calendar.DAY_OF_MONTH, 14);
else if (frequency == 4)
nextPaymentDate.addMonth(1);
//nextPaymentDate.add(Calendar.MONTH, 1);
else if (frequency == 5)
nextPaymentDate.addMonth(2);
//nextPaymentDate.add(Calendar.MONTH, 2);
else if (frequency == 6)