code:

//File: TextStats.java
//Description: This program will analyze text that the user enters via the keybo
ard. It will count the number of words, characters, letters, vowels, consonants,
 digits, and punctuation. It will also count the number of times each letter and
 digit occurs in the input. It will display all of the results to the screen aft
erwards.
//Programmer: John Doe
//Date: 11/18/2005

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

/**
        Description: Program 5 for CS 119, Fall 2005

        @author John Doe
*/
public class TextStats
{
        /**
                Main method starts here
        */
        public static void main(String[] args)
        {
                //Initialize the variables
                Scanner kbd = new Scanner(System.in);
                int words = 0;
                int characters = 0;
                int vowels = 0;
                int consonants = 0;
                int digits[] = new int[9];
                int punctuation = 0;
                int letters[] = new int['z'];
                int other = 0;
                String input;
                char tempchar;
                int numlets = 0;
                int numdigits = 0;

                //Initialize the values in the arrays
                for(int i=0; i < digits.length; i++)
                        digits[i] = 0;
                for(char let='a'; let <= 'z'; let++)
                {
                        letters[let - 'a'] = 0;
                //      System.out.println(let + " " + letters[let - 'a']);
                }
                /**
                if(isVowel('h'))
                        System.out.println("It is a vowel");
                if(isPunctuation('?'))
                        System.out.println("It is punctuation");
                */
                //Start gathering the data and analyzing it
                System.out.println("Enter some data to be analyzed. Type CTRL+D
to stop the input");
                do
                {
                        input = kbd.next();
                        words++;
                        for(int i=0; i < input.length(); i++)
                        {
                                tempchar = input.charAt(i);
                                characters++;
                                if (Character.isDigit(tempchar))
                                {
                                        digits[tempchar - '0']++;
                                        numdigits++;
                                }
                                else if (Character.isLetter(tempchar))
                                {
                                        tempchar = Character.toLowerCase(tempcha
r);
                                        if (isVowel(tempchar))
                                                vowels++;
                                        else
                                                consonants++;
                                        letters[tempchar - 'a']++;
                                        numlets++;
                                }
                                else if (isPunctuation(tempchar))
                                        punctuation++;
                                else other++;
                        }
                } while(kbd.hasNext());

                //Output the results
                System.out.println("The input had the following attributes:");
                System.out.println("Words: " + words);
                System.out.println("Characters: " + characters);
                System.out.println("Letters: " + numlets);
                System.out.println("Vowels: " +vowels);
                System.out.println("Consonants: " +consonants);
                System.out.println("Digits: " +numdigits);
                System.out.println("Punctuation: " + punctuation);
                System.out.println("Other charachters: " + other);
                System.out.println("\nBreakdown of the letters:");
        for(char let='a'; let <= 'z'; let++)
                System.out.println(let + " " + letters[let - 'a']);
                System.out.println("\nBreakdown of the digits:");
                for(int i=0; i < digits.length; i++)
                        System.out.println(i + " " + digits[i]);
        }
        //Function that uses a switch statement to determine if the argument is
a vowel or not.
        public static boolean isVowel(char ch)
        {
                switch(ch)
                {
                        case 'a':
                        case 'e':
                        case 'i':
                        case 'o':
                        case 'u':
                                return true;
                        default:
                                return false;
                }
        }
        //Function that uses a switch statement to determine if the argument is
punctuation or not.
        public static boolean isPunctuation(char ch)
        {
                switch(ch)
                {
                        case '.':
                        case ',':
                        case ';':
                        case '?':
                        case '!':
                        case ':':
                        case '\"':
                        case ''':
                                return true;
                        default:
                                return false;
                }
        }
}