Java Program to Check
Character is Vowel or Consonant

Last Updated: 17 July, 2022

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On this tutorial page we are going to learn how to write a Java program to check whether the character is a vowel or consonant.

Among the alphabets, A, E, I, O and U (smallcase and uppercase) are known as vowels, while the rest of the alphabets are known as consonants.

Vowels: A, E, I, O, U

Consonants: B, C, D, F, G, H, J, K, L, M, N, P, Q, R, S, T, V, W, X, Y, Z

Let's see the Java program implementation.

Program 1: Java Program to Check Character is Vowel or Consonant By Using If-else Statement

public class VowelOrConsonant { public static void main(String args[]) { isCharacterVowelOrConsonant('K'); isCharacterVowelOrConsonant('e'); } // Checking whether the character is vowel or constant using if-else public static void isCharacterVowelOrConsonant(char ch) { if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U') System.out.println(ch + " is a vowel character."); else System.out.println(ch + " is a consonant character."); } }

Output

K is a consonant character.
e is a vowel character.

Program 2: Java Program to Check Character is Vowel or Consonant By Using If-else Statement and user input

import java.util.Scanner; public class VowelOrConsonant { public static void main(String args[]) { System.out.print("Enter a character : "); Scanner scanner = new Scanner(System.in); char ch = scanner.next().charAt(0); scanner.close(); // Checking whether the character is vowel or constant using switch if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U') System.out.println(ch + " is a vowel character."); else System.out.println(ch + " is a consonant character."); } }

Output 1 :

Enter a character : e
e is a vowel character.

Output 2 :

Enter a character :R
R is a consonant character.

Program 3: Java Program to Check Character is Vowel or Consonant By Using Switch Case

public class VowelOrConsonant3 { public static void main(String args[]) { isCharacterVowelOrConsonant('K'); isCharacterVowelOrConsonant('e'); } // Checking whether the character is vowel or constant using switch public static void isCharacterVowelOrConsonant(char ch) { switch (ch) { case 'a': case 'e': case 'i': case 'o': case 'u': case 'A': case 'E': case 'I': case 'O': case 'U': System.out.println(ch + " is a vowel character."); break; default: System.out.println(ch + " is a consonant character."); break; } } }

Output

K is a consonant character.
e is a vowel character.

Program 4: Java Program to Check Character is Vowel or Consonant By Using user defined Method

public class VowelOrConsonant4 { public static void main(String args[]) { isCharacterVowelOrConsonant('K'); isCharacterVowelOrConsonant('e'); } // Checking whether the character is vowel or constant // using indexOf() method of String class public static void isCharacterVowelOrConsonant(char ch) { String charList = "aeiouAEIOU"; if (charList.indexOf(ch) != -1) System.out.println(ch + " is a vowel character."); else System.out.println(ch + " is a consonant character."); } }

Output

K is a consonant character.
e is a vowel character.