Java Program to calculate factorial by passing object

public class FindFactorial {
int a=0;
  FindFactorial(int i){
    a=i;
  }
  int displayFact(FindFactorial f){
    if(f.a<1)
      return 1;
    else{
         f.a--;
         return (f.a+1)*displayFact(f);
     }
  }
}

 
public class Main {
public static void main(String[] args){
      FindFactorial f1 = new FindFactorial(3);
      System.out.println("factorial ="+ f1.displayFact(f1));
}
}

Output: