title: Simple Java present value calculator is not working
body: <p>I have not used java before and I am confused as to why a simple present value calculator I wrote is not working. The present value formula returns a super small number for some reason? See if you can spot my error:</p>
  
  <pre><code>// Import all utilities
  import java.text.DecimalFormat;
  import java.util.*;
  
  // Base class
  public class Project2
  {
  
     // Main function
     public static void main(String[] args)
     {
        // Define variables
        double p = 0.0;
        double f = 0.0;
        double r = 0.0;
        double n = 0.0;
        String another = "Y";
  
        // Create a currency format
        DecimalFormat dollar = new DecimalFormat("#,###.00");
  
        // Create a new instance of the scanner class
        Scanner keyboard = new Scanner(System.in);
  
        // Loop while another equals "Y"
        while(another.equals("Y"))
        {
           // Get future value
           System.out.println("Future value: ");
           f = Double.parseDouble(keyboard.nextLine());
  
           // Get annual interest rate
           System.out.println("Annual interest rate: ");
           r = Double.parseDouble(keyboard.nextLine());
  
           // Get Number of years
           System.out.println("Number of years: ");
           n = Double.parseDouble(keyboard.nextLine());
  
           // Run method to find present value and display result
           p = presentValue(f, r, n);
           System.out.println("Present value: $" + p );
  
           // Ask if user wants to enter another
           System.out.println("Enter another?(Y/N) ");
           another = keyboard.nextLine().toUpperCase();
        }
  
     }
  
     public static double presentValue(double f, double r, double n)
     {
        // Do math and return result
        double p = f / Math.pow((1 + r), n);
        return p;
     }
  }
  </code></pre>