Count Vowel

import java.io.*;
import java.util.Scanner;

class count {
	String txt;
	count(String stn) {
		this.txt = stn;
	}

	int vowel_count() {
		int count = 0;
		int length = 0;
		while(length != txt.length()) {

			/* Convert string to character */
			if(vowel_count(txt.charAt(length)))
				count++;
			length++;
		}

		return count;
	}

	boolean vowel_count(char a) {

		/* Convert character to lowercase */
		a = Character.toLowerCase(a);

		/* Checking for vowel */
		if(a == 'a' || a == 'e' || a == 'i' || a == 'o' || a == 'u')
			return true;
		else
			return false;
	}
}


class vowelcount {
	public static void main(String args[ ]) {
		Scanner input = new Scanner(System.in);
		System.out.println("Enter a String to count number of vowels:");
		count vc = new count(input.nextLine());
		System.out.println("There have "+vc.vowel_count()+" vowels.");
	}
}


/****** Output ******/
Enter a String to count number of vowels:

Hello World

There have 3 vowels.