/**
 * Simulations of various banking activities.
 *
 * @author Samuel A. Rebelsky
 * @author ...
 * @version 1.0
 */
public class Bank {
  /** The default interest rate */
  public static double default_rate = (double) 0.03;

  /** 
     Compute the present value of an investiment.  Permits you to specify
     investment, annual rate and number of years.  Assumes that interest
     is compounded annually.
   */
  public static double presentValue(double investment, double rate, int years) {
    // Not yet implemented
    return (double) 1.0;
  } // presentValue

  /** Test our various methods.  */
  public static void main(String[] args) {
    // Determine the periods we'll be using
    int[] periods = { 0, 1, 10, 100, 1000, 10000 };
    // The present value
    double pv;
    // For timing
    long before;
    long after;
    // Print out the results
    for (int i = 0; i < periods.length; ++i) {
      before = System.currentTimeMillis();
      pv = presentValue((double) 5.0, default_rate, periods[i]);
      after = System.currentTimeMillis();
      System.out.println("$5 after " + periods[i] + " years is " + pv);
      System.out.println("That computation took " +
        (after-before) + " milliseconds.");
    } // for
  } // main
} // Bank