编写Java应用程序

编写Java程序，求50的阶乘，要求输出结果的每一位

import java.math.BigInteger;
public class HelloWorld {
    public static void main(String []args) {
        int n = 50;
        BigInteger sum = new BigInteger("1");
        for (int i = 2; i <= n; i++) {
            sum = sum.multiply(new BigInteger("" + i));
        }
        System.out.println(sum);
    }
}