/**
   @version 1.10 1999-12-17
   @author Cay Horstmann
*/

import java.text.*;
import javax.swing.*;

public class Retirement2
{
   public static void main(String[] args)
   {
      String input = JOptionPane.showInputDialog
         ("How much money will you contribute every year?");
      double payment =  Double.parseDouble(input);

      input = JOptionPane.showInputDialog
         ("Interest rate in %:");
      double interestRate =  Double.parseDouble(input);

      double balance = 0;
      int year = 0;

      NumberFormat formatter
         = NumberFormat.getCurrencyInstance();

      // update account balance while user isn't ready to retire
      do
      {
         // add this year's payment and interest
         balance += payment;
         double interest = balance * interestRate / 100;
         balance += interest;

         year++;

         // print current balance
         System.out.println("After year " + year
            + ", your balance is "
            + formatter.format(balance));

         // ask if ready to retire and get input
         input = JOptionPane.showInputDialog
            ("Ready to retire? (Y/N)");
         input = input.toUpperCase();
      }
      while (input.equals("N"));

      System.exit(0);
   }
}