MySQL и различия SQLite в SQL

package application;
import mathematics.MathHelper;

public class Application {

    public static void main(String[] args) {
        System.out.println(MathHelper.fact((9)));

    }   
}

package mathematics;

public class MathHelper {

    public static void main(String[]args) {}

    public static int fact(int factNum) {

       if (factNum==1) {   
           return 1;
        }
        else {
           return factNum * (fact(factNum - 1));
        }
    }
 }