Calculating factorial of huge numbers using BigInteger Java class.

HugeFactorials.java

//bNum = Initializing big interger to value.
BigInteger bNum = BigInteger.ONE;

// n = The input number whose factorial is to be calculated.
for (long i = 1; i <= n; i++) {
	bNum = bNum.multiply(bNum.valueOf(i));
}

//Storing the value of factorial in a string.
String factorialValue = String.valueOf(bNum);