import java.util.*;
 
 class WsCube {
    public static void main(String[] args) {
        String str = "JAvaProGramming";
 
        // Array store the frequency of 
        // each character
        int[] count = new int[52];
 
        // Loop through string and 
        for (char ch : str.toCharArray()) {
 
            // Update count at index (char - 'a')
            if((int)ch >= 97 && (int)ch <= 122){
                count[ch - 'a']++;
            }
 
            if((int)ch >= 65 && (int)ch <= 90){
 
                // Update count at index (char - 'A')
                int temp = ch -'A';
                count[temp + 25]++;
            }
        }
 
        // Print characters which occurred
        for (int i = 0; i < 52; i++) {
            if (count[i] > 0 && i <= 25) {
                System.out.println((char)(i + 'a') + " : " 
                                              + count[i]);
            }
            if (count[i] > 0 && i > 25) {
                int temp = i - 25;
                System.out.println((char)(temp + 'A') + " : " 
                                                 + count[i]);
            }
 
        }
    }
}

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