【java】求大数的阶乘

import java.math.BigInteger;public class test {final static BigInteger c = new BigInteger("1");public static void main(String[] args){BigInteger b = new BigInteger("100");System.out.println("The result of 100! is "+test(b));}    public static BigInteger test(BigInteger n){        if(n.equals(c))    return c;    else{    return n.multiply(test(n.subtract(c)));    }    }}