Hey guys everything is fine with my code it works and is verified succesfully. I am posting this so that you guys could suggest me any further modifications in my code(i.e if there is some unnecessary code, or may be i could have written some logic better etc). Go through my code and suggest me if any. 
public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        // Alphabet
        String abc = "abcdefghijklmnopqrstuvwxyz";
        char[] abcArray = abc.toCharArray();

        ArrayList<Character> alphabet = new ArrayList<>();
        for (char letter : abcArray) {
            alphabet.add(letter);
        }

        // Read in strings
        ArrayList<String> list = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            String s = reader.readLine();
            list.add(s.toLowerCase());
        }

        //Start of the logic to get character count
        int[] count = new int[alphabet.size()];

        for (String i : list){
            char[] words = i.toCharArray();
            for (char k : words){
                for (int j = 0; j < alphabet.size(); j++){
                    if (alphabet.get(j).equals(k)){
                        count[j]++;
                    }
                }
            }
        }
        //end of the logic to get character count

        ArrayList<String> list1 = new ArrayList<>();

        for (int i = 0; i < alphabet.size(); i++){
            list1.add(alphabet.get(i) + " " + count[i]);
        }

        for (String i : list1){
            System.out.println(i);
        }
    }

}