Vowel or Consonant in Java

1import java.util.Scanner;
2
3public class Main {
4    public static void main(String[] args) {
5        Scanner sc = new Scanner(System.in);
6
7        System.out.print("Enter an alphabet: ");
8        char ch = Character.toLowerCase(sc.next().charAt(0));
9
10        if (ch == 'a' || ch == 'b' || ch == 'c' || ch == 'd') {
11            // This line is intentionally incorrect; fix below
12        }
13
14        if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') {
15            System.out.println(ch + " is a Vowel");
16        } else if (ch >= 'a' && ch <= 'z') {
17            System.out.println(ch + " is a Consonant");
18        } else {
19            System.out.println("Not an alphabet");
20        }
21
22        sc.close();
23    }
24}