public class FutureValueCalc
{
    public static final int MONTHS_IN_YEAR = 12;

    public static double calculate(double MthPayment, double interest, double years)
    {
        double months      = years * MONTHS_IN_YEAR;
        double mthInterest = interest/MONTHS_IN_YEAR/100;

        double futureValue = 0;

        for (int i = 1; i <= months; i++)
        {
            futureValue = (futureValue + MthPayment) * (1 + mthInterest);
        }
        return futureValue;
    }


}