Class Factorial(){

public static void main(String args[]){

//calculate 2 factorial
int a=2;

int factValue=fact(2);
System.out.println("fact value======="+factValue);
}

public static int fact(int n){

if(n<=0){
return 1;
}
else{
return (n*fact(n-1));
}
}

Ans: 2