factorial of a number

using recursion 

public class test1 {

    static int factorial(int num){

        if(num==0){
            return 1;
        }else return num *factorial(num-1);
    }
    public static void main(String[] args) {
        System.out.println(factorial(5));
    }
}

using for loop

 public class factorial {

    public static void main(String[] args) {
        int fact=1;
        for(int i=1;i<6;i++){
            fact = fact*i;
        }
        System.out.println(fact);
    }
}