Java Program to Check Whether the Character is Vowel or Consonant

For any given character, we need to check if it is a vowel or a consonant. As we know, vowels are ‘a’, ‘e’, ‘i’, ‘o’, ‘u’ and all the other characters (i.e. ‘b’, ‘c’, ‘d’, ‘f’ …..) are consonants.

Examples:  

Input : char = 'r'
Output : Consonant

Input : char = 'e'
Output : Vowel

Here, in the below implementation we will check if the stated character corresponds to any of the five vowels. And if it matches, “Vowel” is printed, else “Consonant” is printed.

Example 1:

Java

// java program to check whether input
// character is a vowel or consonant

import java.io.*;

public class geek {

    // Function to find whether an input
    // character is vowel or not
    static void Vowel_Or_Consonant(char y)
    {
        if (y == 'a' || y == 'e' || y == 'i' || y == 'o'
            || y == 'u')
            System.out.println("It is a Vowel.");
        else
            System.out.println("It is a Consonant.");
    }

    // The Driver code
    static public void main(String[] args)
    {
        Vowel_Or_Consonant('b');
        Vowel_Or_Consonant('u');
    }
}

Output

It is a Consonant.
It is a Vowel.

Example 2:

• Alteration for capital letters.

Java

// java program to check whether input
// character is a vowel or consonant

import java.io.*;

public class geek {

    // Function to find whether an input
    // character is vowel or not
    static void Vowel_Or_Consonant(char y)
    {
        if (y == 'a' || y == 'e' || y == 'i' || y == 'o'
            || y == 'u' || y == 'A' || y == 'E' || y == 'I'
            || y == 'O' || y == 'U')
            System.out.println("It is a Vowel.");
        else
            System.out.println("It is a Consonant.");
    }

    // The Driver code
    static public void main(String[] args)
    {
        Vowel_Or_Consonant('W');
        Vowel_Or_Consonant('I');
    }
}

Output

It is a Consonant.
It is a Vowel.

Example 3:

• indexOf() Method

Java

// java program to check whether input
// character is a vowel or consonant

import java.io.*;

class GFG {
    // Function to find whether an input
    // character is vowel or not
    static String isVowel(char ch)
    {
        // Make the list of vowels
        String str = "aeiouAEIOU";
        return (str.indexOf(ch) != -1) ? "Vowel"
                                       : "Consonant";
    }

    // Driver Code
    public static void main(String[] args)
    {
        System.out.println("It is a " + isVowel('a'));
        System.out.println("It is a " + isVowel('x'));
    }
}

Output

It is a Vowel
It is a Consonant