GENERATE HARMONIC SERIES THROUGH JAVA

/* Write a program to generate Harmonic Series.
   Example :
   Input - 5
   Output - 1 + 1/2 + 1/3 + 1/4 + 1/5 = 2.28 (Approximately) */
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);
 }
}