Vowels program in java

Java Program to check vowel or consonant using if-else

In the following problem, we are asked to write a Java source code where we are supposed to ask the user to enter a character using standard input and then check if the character is a vowel or not.

The algorithm will be:

1. Prompt the user to enter a character.
2. Store the user's input in a variable.
3. Create a duplicate of the original value in a different variable and change its case to lower case (or upper case, depending on the original case).
4. Use an if-else construct to check if the character is a vowel.
5. Compare the lower case (or upper case) version of the input character with all the lower case (or upper case) vowels.
6. Print a message indicating whether the character is a vowel or not, based on the comparison.

Note: You can use both Scanner and BufferedReader Class to take input.

Source Code:

import java.util.*;

class CheckVowel {
    public static void main() {
        Scanner inp = new Scanner(System.in);
        System.out.print("\nEnter Character: ");
        char c = (inp.nextLine()).charAt(0);
        char z = Character.toUpperCase(c); // Changing value to uppercase for uniformity.

        if (z == 'A' || z == 'E' || z == 'I' || z == 'O' || z == 'U') {
            // Checking if vowel
            System.out.println(c + " is a vowel.");
        } else {
            System.out.println(c + " is not a vowel.");
        }
    }
}

Output:

Enter Character: t
t is not a Vowel.

Enter Character: V
V is not a Vowel.

Enter Character: o
o is a Vowel.

Enter Character: A
A is a Vowel.