helo all, can any one tell me ...how to add values taken from text box and display it to user. the requirement is..from total amount to be paid and total paid we have to find the due amount to be paid..and each employee is issued with voucher number after paying,and if required we can add some additional amount to tht voucher number.i.e,once if i have paid 1000rupees and second time if have piad 200 rupees it shd add previous amount and current paid amount and display it to user...can any one help me as soon as possible using jsp

thanks in advance