Character Sum

public class CharacterSum {

    public CharacterSum(String in) {
        int sum = 0;
        for (char ch : in.toCharArray()) {
                sum += toNumber(ch);
        }
        System.out.println("Sum: " + sum);
    }

    private int toNumber(char ch) {
        return ((int) ch) - 96; // Since ASCII letters starts at 97
    }

    public static void main(String args[]) {
        new CharacterSum("aaa");
    }

}