WAP to accept a line and check how many consonants and vowels are there in line

CODE:

import java.io.*;

class vowels

{

            public static void main(String args[]) throws IOException

            {

                        String str;

                        int vowels = 0, digits = 0, blanks = 0;

                        char ch;

                        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

                        System.out.print("Enter a String : ");

                        str = br.readLine();

                        for(int i = 0; i < str.length(); i ++)

                        {

                                    ch = str.charAt(i);

                                    if(ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' ||

                                    ch == 'I' || ch == 'o' || ch == 'O' || ch == 'u' || ch == 'U')

                                                vowels ++;

                                    else if(Character.isDigit(ch))

                                                digits ++;

                                    else if(Character.isWhitespace(ch))

                                                blanks ++;

                        }

                        System.out.println("Vowels : " + vowels);

                        System.out.println("Digits : " + digits);

                        System.out.println("Blanks : " + blanks);

            }

}

OUTPUT: