Generate Harmonic Series

    class HarmonicSeries
   {
     public static void main(String args[])
     {
       int num = Integer.parseInt(args[0]);
       double result = 0.0;
       while(num > 0)
       {
         result = result + (double) 1 / num;
         num--;
       }
       System.out.println("Output of Harmonic Series is "+result);
     }
   }