Get occurrence of character in a String

import java.util.HashMap;

import java.util.Map;

public class OccurenceOfCharInString {

    public static void main(String[] args) {
        System.out.println(getCharacterCount("malayalam"));
    }

    static Map<Character,Integer> getCharacterCount(String str){
        HashMap<Character,Integer> charMap=new HashMap<>();
        char[] strArr=str.toCharArray();
        for (char c:strArr
             ) {
            if(charMap.containsKey(c))
                charMap.put(c,charMap.get(c)+1);
            else
                charMap.put(c,1);
        }
        return charMap;
    }

}