// ****************************************************************
// CountLetters.java
//
// Reads a words from the standard input and prints the number of 
// occurrences of each letter in that word.
//  
// Igor Pavlenko        
// ****************************************************************
import java.util.Scanner;
public class CountLetters
{
    public static void main(String[] args)
    {
	int[] counts = new int[26];
	Scanner scan = new Scanner(System.in);

try
{
	//get word from user
	System.out.print("Enter a single word (letters only, please): ");
	String word = scan.nextLine();

	//convert to all upper case
	word = word.toUpperCase();

	//count frequency of each letter in string
	for (int i=0; i < word.length(); i++)
	    counts[word.charAt(i)-'A']++;

	//print frequencies
	System.out.println();
	for (int i=0; i < counts.length; i++)
	    if (counts [i] != 0)
		System.out.println((char)(i +'A') + ": " + counts[i]);
}
catch(ArrayIndexOutOfBoundsException e)
{
	System.out.println((char)(i +'A')+"  not a letter")
}





    }

}