Letter Frequency Count

package Java24;
// This program counts letter frequency of random phrases

public class LetterFrequency {
    public static void main(String[] args){
        String phrase[] = {
            "the cat is in the fridge",
            "everyone is an idiot",
            "let's kick some butts",
            "being stupid is hard",
            "zero is a great digit",
            "yay for apples"
        };
        int[] letterCount = new int[26];

        for(int i = 0; i < phrase.length; i++){
            String currentPhrase = phrase[i];
            char[] letters = currentPhrase.toCharArray();

            for(int j = 0; j < letters.length; j++){
                char letter = letters[j];

                if(letter >= 'a' && letter <= 'z'){
                    letterCount[letter - 'a']++;
                }
            }
        }

        System.out.println("Letter Count:");
        for(char letter = 'a'; letter <= 'z'; letter++){
            System.out.print(letter + ": " + letterCount[letter - 'a'] + " ");
        }
    }
}