Introduction

This Java program checks if the character in question is a vowel or a consonant. The vowels in the English alphabet are a, e, i, o, and u. The consonants in the English alphabet are b, c, d, f, ….., that is, all letters that are not vowels.

Examples:

Input: char = r
Output: Consonant

Input: char = e
Output: Vowel

Approach:

We will take a character as input or otherwise and then check whether the character equals either a, or e, or i, or o, or u. If it does, we will print out that the character is a vowel. If it does not, we will print out that character is a consonant.

Java Program to Check Whether the Character is Vowel or Consonant

Sample Code 1

//This program will check if the character input is either a vowel or a character
import java.io.*;
public class Demo
{
//Required function given below
static void vowelCheck (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”);
}
//Main Method
static public void main (String args [])
{
VowelCheck (‘b’);
VowelChecl (‘u’);
}
}

OUTPUT

It is a consonant
It is a Vowel

Sample Code 2

This code also checks for capital letter characters.

//This program will check if the character input is either a vowel or character, including capital //letters
import java.io.*;
public class Demo
{
//Required function given below
static void vowelCheck (char y)
{
if (y == ‘a’ || y == ‘e’ || y == ‘i’ || y = ‘o’ || y == ‘u’ || y == ‘A’ || y == ‘E’ || y == ‘I’ || y = ‘)’ || y == ‘U’)
System.out.println (“It is a vowel”);
else
System.out.println (“It is a consonant”);
}
//Main function
static public void main (String args [])
{
VowelCheck (‘W’);
VowelChecl (‘I’);
}
}

OUTPUT

It is a consonant
It is a Vowel

Sample Code 3

The program below will use the indexOf method of characters to implement the program.

//This program will check if the character input is either a vowel or character using the indexOf //method ()
import java.io.*;
public class Demo
{
//Required function given below
static void vowelCheck (char y)
{
//Noting down all vowels, both small and capital letters
String str = “aeiouAEIOU”;
return (str.indexOf(y) ! = -1) ? “Vowel” : “Consonant” ;
}
//Main Method
public static void main (String args [])
{
System.out.println (“It is a ” + vowelCheck (‘a’));
System.out.println (“It is a ” + vowelCheck (‘x’));
}
}

OUTPUT

It is a Vowel
It is a Consonant