How do I check if a char is a vowel?

Question

This Java code is giving me trouble:

    String word = 
    int y = 3;
    char z;
    do {
        z = word.charAt(y);
         if (z!=         


        

Answer 1

I have declared a char[] constant for the VOWELS, then implemented a method that checks whether a char is a vowel or not (returning a boolean value). In my main method, I am declaring a string and converting it to an array of chars, so that I can pass the index of the char array as the parameter of my isVowel method:

public class FindVowelsInString {

        static final char[] VOWELS = {'a', 'e', 'i', 'o', 'u'};

        public static void main(String[] args) {

            String str = "hello";
            char[] array = str.toCharArray();

            //Check with a consonant
            boolean vowelChecker = FindVowelsInString.isVowel(array[0]);
            System.out.println("Is this a character a vowel?" + vowelChecker);

            //Check with a vowel
            boolean vowelChecker2 = FindVowelsInString.isVowel(array[1]);
            System.out.println("Is this a character a vowel?" + vowelChecker2);

        }

        private static boolean isVowel(char vowel) {
            boolean isVowel = false;
            for (int i = 0; i < FindVowelsInString.getVowel().length; i++) {
                if (FindVowelsInString.getVowel()[i] == vowel) {
                    isVowel = true;
                }
            }
            return isVowel;
        }

        public static char[] getVowel() {
            return FindVowelsInString.VOWELS;
        }
    }