O2. Vowels Count

package ExerciseMethoods;

import java.util.Scanner;

public class O2VowelsCount {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String command = scanner.nextLine();
        System.out.println(number(command));
    }

    private static int number(String command) {
        int sum = 0;
        for (int i = 0; i < command.length(); i++) {

            char currentChar = command.charAt(i);
            switch (currentChar) {
                case 'a':
                case 'e':
                case 'i':
                case 'o':
                case 'u':
                case 'A':
                case 'E':
                case 'I':
                case 'O':
                case 'U':
                    sum += 1;
                    break;
                default:
                    break;
            }
        }
        return (sum);
    }
}