/**
 * Write a description of class TestCharData here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
import java.util.*;

public class TestCharData
{
    public static void main(String [] args)
    {
        Scanner keyboard = new Scanner(System.in);
        System.out.print("Type in a string: ");
        String input = keyboard.nextLine();
        
        // examine the String and see what is in it
        int letters = 0;
        int digits = 0;
        int whiteSpace = 0;
        
        for (int i = 0; i < input.length(); i++)
        {
            char ch = input.charAt(i);
            if (Character.isLetter(ch))
                letters++;
            else if (Character.isDigit(ch))
                digits++;
            else if (Character.isWhitespace(ch))
                whiteSpace++;
        }
        System.out.println("letter count = " + letters);
        System.out.println("digit count = " + digits);
        System.out.println("white space count = " + whiteSpace);
    }
}