Count Vowels
Count the number of vowels in a string.
BeginnerTopic: Module 4: String Programs
Java Count Vowels Program
This program helps you to learn the fundamental structure and syntax of Java programming.
import java.util.Scanner;
public class Main {
private static boolean isVowel(char c) {
c = Character.toLowerCase(c);
return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("Enter a string: ");
String s = sc.nextLine();
int count = 0;
for (int i = 0; i < s.length(); i++) {
if (isVowel(s.charAt(i))) {
count++;
}
}
System.out.println("Vowels: " + count);
sc.close();
}
}Output
Enter a string: hello world Vowels: 3
Understanding Count Vowels
We scan each character and increment count when it is a vowel.
Note: To write and run Java programs, you need to set up the local environment on your computer. Refer to the complete article Setting up Java Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your Java programs.