01: /**
02:    This program computes how long it takes for an investment
03:    to double.
04: */
05: public class InvestmentRunner
06: {
07:    public static void main(String[] args)
08:    {
09:       final double INITIAL_BALANCE = 10000;
10:       final double RATE = 5;
11:       Investment invest = new Investment(INITIAL_BALANCE, RATE);
12:       invest.waitForBalance(2 * INITIAL_BALANCE);
13:       int years = invest.getYears();
14:       System.out.println("The investment doubled after "
15:             + years + " years");
16:    }   
17: }