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I figured it out. Thanks for your help!

The nbrTimesAround would be the same as the variable though. My method to put the parameters into is invest.getFutureValue(numberOfYears, numberOfTimes). So if I wrote it like you said it would have...

Yes it should change. If the user inputs number of years as 10 then it should display values 1-10 in numberOfYears in my algorithm, so:

algorithm -- principal * Math.pow((1 + interestRate /...

So even with a loop, I need to pass numberOfYears and numberOfTimes to it every time?

My algorithm method in another class is

public double getFutureValue(int numberOfYears, int numberOfTimes)
{
return principal * Math.pow((1 + interestRate / numberOfTimes), (numberOfYears *...