Factorial Program:


public class Factorials {

/**
* @param args
*/
public static void main(String[] args) {
System.out.println("Inside main class");
System.out.println("factorial of 5:"+fact(5));

}

static int fact(int num) {
if (num == 0 || num == 1)
return 1;
else if (num < 0)
return 0;
else
return num * fact(num - 1);
}
}