Use string methods to find and count vowels in a string?

Question

I have this problem for homework (I\'m being honest, not trying to hide it at least) And I\'m having problems figuring out how to do it.

Given the following declarat

Answer 1

I know that's an old edit , but i think it's better if you use and array for the vowels :

public static void main(String[] args) {

    String phrase = " WazzUp ? - Who's On FIRST ??? - IDUNNO".toLowerCase();
    int vowels = 0;
    String[] array = {"a", "e", "i", "o", "u"};
    for (int i = 0; i < phrase.length(); i++) {
        String j = phrase.substring(i, i + 1);
        System.out.println(j);
        for (int n = 0; n < array.length; n++) {
            if (j.equals(array[n])) {
                vowels++;
            }
        }
    }
    System.out.println("Number of vowels: " + vowels);
}