Power digit sum (Java 8 ver) Sample by ClearNB

Solution.java

import java.math.BigInteger;
import java.util.*;

public class Solution {
    static int getValue(String data) {
        int res = 0;
        for(int i = 0; i < data.length(); i++) {
            res += Integer.parseInt(data.substring(i, i + 1));
        }
        return res;
    }
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in)) {
            int T = sc.nextInt();
            for(int a0 = 0; a0 < T; a0++) {
                int N = sc.nextInt();
                BigInteger bi = BigInteger.ONE;
                for(int i = 0; i < N; i++) {
                    bi = bi.multiply(BigInteger.valueOf(2));
                }
                String str = "" + bi;
                int sum = getValue(str);
                System.out.println(bi + " : " + sum);
            }
        }
    }
}