/***********************************************************************************
 * PaymentCalculator is a Java class that can be deployed as a Web Service. The
 * class provides methods to return the monthly payment amount and the total payment.
 * 
 * Kelli Wiseth
 * NDNU | XML and Web services class
 * 25-November-2004
 *
 *********************************************************************************** 
 */


public class PaymentCalculator
    {
    public double getMonthlyPayment (double intRate, double principal, double loanTerm) 
      {
      double interestRate = intRate/1200;
      double principalAmt = principal;
      double term = loanTerm * 12;
      double loanPmtExponent = Math.pow((1+interestRate), term);
      double monthlyPaymentAmt = (interestRate + (interestRate / (loanPmtExponent-1))) * principalAmt;
      return monthlyPaymentAmt;
      }

    public double getTotalPayment (double intRate, double principal, double loanTerm) 
     {
      double interestRate = intRate/1200;
      double principalAmt = principal;
      double term = loanTerm * 12;
      double loanPmtExponent = Math.pow((1+interestRate), term);
      double totalPaymentAmt = term * ((interestRate + (interestRate / (loanPmtExponent-1))) * principalAmt);
      return totalPaymentAmt;


     }

  
}// class PaymentCalculator