In this program you'll learn, how to check that a character is vowel or consonant.

To understand this example, you should have the knowledge of the following Java programming topics:

Checking input character

A java program to check the input character is vowel or consonant is as follows:

Code:

import java.util.Scanner;

public class VowelOrConsonant {
    public static void main(String[] args) {
               Scanner scanner = new Scanner(System.in);

        // Input character from user
        System.out.print("Enter a single alphabet character: ");
        char alphabet = scanner.next().charAt(0);
        char ch = String.valueOf(alphabet).toLowerCase().charAt(0);
        // Check if input is an alphabet
        if ((ch >= 'a' && ch <= 'z')) {
            // Check for vowel
            if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') {
                System.out.println(alphabet + " is a vowel.");
            } else {
                System.out.println(alphabet + " is a consonant.");
            }
        } else {
            System.out.println("Invalid input. Please enter an alphabet letter.");
        }
        scanner.close();
    }
}

Output:

Enter a single alphabet character: E
E is a vowel.

Enter a single alphabet character: f
f is a consonant.

The Java program:

Takes a single character as input.

Converts it to lowercase.

Checks if it’s an alphabet.

If it's a vowel (a, e, i, o, u), it prints “vowel”.

Otherwise, it prints “consonant”.

If not a letter, it prints “Invalid input”.

Simple and effective for basic character classification.

Java Program to check whether input character is vowel or consonant.

Checking input character

Code:

Output:

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