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+/// How to calculate factorial of BigNumber%0A/// Author : Shohanur Rahaman%0A%0A%09import java.math.BigInteger;%0A%09import java.util.*;%0A%09%0A%09class factorial%7B%0A%09%09%09public static void main(String args%5B%5D)%7B%0A%09%09%09%09%0A%09%09%09%09String a=%22100%22;%0A%09%09%09%09BigInteger num=new BigInteger(%221%22);%0A%09%09%09%09int b=Integer.parseInt(a);%0A%09%09%09%09%09%0A%09%09%09%09%09for(int i=1;i%3Cb;i++)%7B%0A%09%09%09%09%09%09num=num.multiply(num.valueOf(i));%0A%09%09%09%09%09%7D%0A%09%09%09%09%09 System.out.println(num);%0A%09%09%09%7D%0A%09%0A%09%7D%0A

Create large_factorial.java