Java Program to Count Number of Vowels in a String - The Coding Shala

Home >> Java Programs >> Count Number of Vowels in a String

 In this post, we will learn how to Count the Total Number of Vowels in a given String in Java.

Java Program to Count Number of Vowels in a String

You have given a String. Write a Java Program to Count the Total Number of Vowels in the String.

Example 1:
Input: Akshay
Output: 2

Example 2:
Input: This Is a String
Output: 4

Java Program: 

// Java program to Count number of Vowels in String

public class Main {
	
	public static void main(String[] args) { 
		
		String str = "This Is a String";
		int count = 0;
		
		// convert this string to lower case 
		// so we only need to check lower case character
		str = str.toLowerCase();
		
		for (int i = 0; i < str.length(); i++) {
			char ch = str.charAt(i);
			if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') {
				count++;
			}
		}
		
		System.out.println("Number of Vowels in the given string are: " + count);
	}
}

Output: 

Number of Vowels in the given string are: 4


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