Index of Letters

import java.util.Scanner;

public class IndexOfLetters {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        char[] alphabet = new char[26];
        for (int i = 0; i < 26; i++) {
            alphabet[i] = (char)('a' + i);
        }

        String word = scanner.nextLine().toLowerCase();
        for (int i = 0; i < word.length(); i++) {
            for (int j = 0; j < alphabet.length; j++) {
                if (word.charAt(i) == alphabet[j]) {
                    System.out.println(word.charAt(i) + " -> " + j);
                }
            }
        }
    }
}