Question

Write a Java program to print the factorial of an integer number. Example- Factorial of 5= 5*4*3*2*1=120, Factorial 0f 7= 7*6*5*4*3*2*1= 5040​

Answer 1

Answer:

Explanation:

Find Factorial of a number using BigInteger

import java.math.BigInteger;

public class Factorial {

   public static void main(String[] args) {

       int num = 30;

       BigInteger factorial = BigInteger.ONE;

       for(int i = 1; i <= num; ++i)

       {

           // factorial = factorial * i;

           factorial = factorial.multiply(BigInteger.valueOf(i));

       }

       System.out.printf("Factorial of %d = %d", num, factorial);

   }

}