public class FibTime
{  public static void main(String[] args)
   {  ConsoleReader console = new ConsoleReader(System.in);
      System.out.println("Enter n: ");
      int n = console.readInt();
      
      // use stopwatch to time Fibonacci number computation

      StopWatch timer = new StopWatch();

      timer.start();
      int f = fib(n);
      timer.stop();

      System.out.println("fib(" + n + ") = " + f);
      System.out.println("Elapsed time = "
         + timer.getElapsedTime() + " milliseconds");
   }

   /**
      Computes a Fibonacci number. 
      @param n an integer
      @return the nth Fibonacci number
   */
   public static int fib(int n)
   {  if (n <= 2) return 1;
      else return fib(n - 1) + fib(n - 2);   
   }
}