Calculate The Serious Of Number Program Using Java

// series of number program

import java.io.*;
import java.lang.*;

public class ssva01

{
  public static void main(String arg[]) throws IOException
  {
   float n,i;
   float a;
   BufferedReader inp=new BufferedReader(new InputStreamReader(System.in));
   System.out.print("\n\nEnter the value of N:  ");
   n=Float.parseFloat(inp.readLine());
   a=0;
   for(i=1;i<=n;i++)
   {
        a=a+(1/i);
   }
   System.out.println("Series of numbers:    "+a);
 }
}