How to calculate net and gross pay based on the basic pay in Java

import java.io.*;

public class employee

{

   float basic_pay;

       

   public static void main(String args[]) throws Exception

          {

                   InputStreamReader in = new InputStreamReader(System.in);

                   BufferedReader br = new BufferedReader(in);

                   employee e=new employee();

                   System.out.print("Enter Basic Pay : ");

                   e.basic_pay=Float.parseFloat(br.readLine());

                  

                   float DA=0.25f*e.basic_pay;

                   float HA=0.15f*e.basic_pay;

                   float PF=0.0833f*e.basic_pay;

                   float NP=e.basic_pay+HA+PF;

                   float GP=NP-PF;

                  

                   System.out.println("\n");

                   System.out.println("Net pay : "+NP);

                   System.out.println("Gross Pay : "+GP);

          }

}