Java program to check Vowel or consonant using switch case statements

Java program to check Vowel or consonant using switch case

In this article, we will discuss the concept of the Java program to check Vowel or consonant using switch case statements

In this post, we are going to learn how to check the vowels and consonants using switch statements in the Java  programming language

Check vowel or consonant using switch case statements with the break

The program allows to enter an Alphabet and it checks and displays whether the given alphabet is vowel or consonant with the break statements

Program 1

import java.util.Scanner;
public class CheckVowelSwitchcase{
public static void main(String args[]){
    char ch;//variable declaration

 Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
    
System.out.println("Enter the Alphabet for check vowel or consonant  ");
ch=scan.next().charAt(0);;// store the input from the user

switch(ch){
    //check lower case vowel letters
    case 'a':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'e':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'i':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'o':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'u':
    System.out.println(ch+" is a vowel");
    break;
    
    //check upper case vowel letters
    case 'A':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'E':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'I':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'O':
    System.out.println(ch+" is a vowel");
    break;
    
    case 'U':
    System.out.println(ch+" is a vowel");
    break;
    
    default:
    System.out.println(ch+" is a consonant");
    break;
    
    
}
}
    
}

When the above code is executed, it produces the following result

Case 1

Enter the Alphabet for check vowel or consonant
a
a is a vowel

Case 2

Enter the Alphabet for check vowel or consonant
U
U is a vowel

Case 3

Enter the Alphabet for check vowel or consonant
k
k is a consonant

Case 4

Enter the Alphabet for check vowel or consonant
M
M is a consonant

Approach

• Define a character variable ch
• The program is asked the user to enter an Alphabets for check vowel or consonant
• Entered character is stored in the ch variable
• Define cases for the character ch with vowel character both capital and small
• Next, the program checks every case using the given Alpabets.
• Finally, it displays whether the given character is a vowel or a consonant

Check Vowel or consonant using switch case statements without the break

The program allows to enter an Alphabet and it checks and displays whether the given alphabet is vowel or consonant without the break statements

Program 2

import java.util.Scanner;
public class CheckVowelSwitchcase1{
public static void main(String args[]){
    char ch;//variable declaration
    boolean isVowel=false;//Declare a boolean variable

 Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
    
System.out.println("Enter the character  ");
ch=scan.next().charAt(0);;// store the input from the user

switch(ch){
    //check lower case vowel letters
    case 'a':
    case 'e':
    case 'i':
    case 'o':
    case 'u':
    
//check upper case vowel letters
    case 'A':
    case 'E':
    case 'I':
    case 'O':
    case 'U':
    isVowel=true;
}
    
    if(isVowel==true){
        System.out.println(ch+" is a vowel");
    }
    else{ if((ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z' )){
        System.out.println(ch+" is a consonant");
    }
    else{
        System.out.println(ch+" is not a Alphabets");
    }
}
    
}
    
}

When the above code is executed, it produces the following result

Case 1

Enter a character
a
a is a vowel

Case 2

Enter a character
I
I is a vowel

Case 3

Enter a character
v
v is a consonant

Case 4

Enter a character
F
F is a consonant

Case 5

Enter a character
$
$ is not a character

Approach

• Define a character variable ch to check the entered character
• define a boolean variable isVowel and initialized it with false
• The program is asked the user to enter an Alphabet to check whether vowel or consonant
• Entered character is stored in the ch variable
• Define cases for the character ch with vowel character both capital and small
• For all cases, The boolean value is assigned true
• Next, the program checks every case using the given character using if statements.
• Finally, it displays whether the given character is a vowel or a consonant

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