Count number of vowels, consonants and digits in a String in Java

By: Paawan Chaudhary Emailed: 1607 times Printed: 2077 times    

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By: rohit kumar - how this program is work
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By: Rajesh - thanx very much...
By: Suindu De - Suppose we are executing

This java program accepts a string from the console and counts number of vowels, consonants, digits, tabs and blank spaces in a string.

import java.io.*;
class q5vowels
{
	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:

Enter a String : ABC DE 123
Vowels : 2
Digits : 3
Blanks : 2

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Comments(7)


1. View Comment

Its really helpfull to me thanks................

View Tutorial          By: AKS at 2013-08-10 06:27:43
2. View Comment

This is the help full sites for diploma student

View Tutorial          By: Tanuja at 2013-08-11 09:41:55
3. View Comment

Very Great thanks for the code

View Tutorial          By: Alvin Funelas at 2014-07-12 00:42:01
4. View Comment

my query is like this: " accept a string, count no of vowels and remove all vowels". then print the string without vowels.

View Tutorial          By: samtopper at 2014-07-31 17:40:25
5. View Comment

why are we using it ch = str.charAt(i);

View Tutorial          By: Rumman at 2014-10-10 19:42:42
6. View Comment

This has tread error , copy and paster hole code and has that after enter any sentence . out of bounds error thread main thing problem ,

View Tutorial          By: Daniel at 2015-01-21 16:24:36
7. View Comment

thanx very much...

View Tutorial          By: Rajesh at 2015-10-09 08:57:36

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