Class 11: Write a program to input a string and print the number of words that start with a vowel.

import java.io.*;
public class Word_Vowel
{
    boolean isVowel(char ch)
    {
        if(ch=='A'||ch=='E'||ch=='I'||ch=='O'||ch=='U'||ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')
        return true;
        else
        return false;
    }
    public void main()throws IOException
    {
        BufferedReader fl = new BufferedReader(new InputStreamReader(System.in));
        String str;
        char ch, ch2;
        int i , l, c=0;
        System.out.println("Enter a string:");
        str = fl.readLine();
        str = ' '+str;
        l = str.length();
        for(i=0;i<l;i++)
        {
            ch = str.charAt(i);
            if(ch==' ')
            {
                ch2 = str.charAt(i+1);
                if(isVowel(ch2))
                c++;
            }
        }
        System.out.println("Number of words that start with a vowel are: "+c);
    }
}