Harmonic.java in pgm

Harmonic.java

public class Harmonic 

{ 

 public static void main(String[] args) 

{ 

                      int N = Integer.parseInt(args[0]);

                       double sum = 0.0;

        for (int i = 1; i <= N; i++) 

       {

        sum += 1.0 / i;

        }

              System.out.println(sum);

    }

}