Project Euler Problem 16 in Java

PROBLEM


215 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.

What is the sum of the digits of the number 21000?

ANSWER


1366

JAVA CODE

import java.math.BigInteger;

public class Problem16 {

public static void main(String[]args){

BigInteger mul=new BigInteger("1");

BigInteger bg=new BigInteger("2");

for (int i = 0; i < 1000; i++) {

mul=mul.multiply(bg);

}

int sum=0;

String text=mul.toString();

for (int i = 0; i < text.length(); i++) {

sum+=Integer.parseInt(new Character(text.charAt(i)).toString());

}

System.out.println(sum);

}

}