count occurrences of each letter in a string java code example

Example 1: count occurrences of character in string java 8

String someString = "elephant";
long count = someString.chars().filter(ch -> ch == 'e').count();
assertEquals(2, count);
 
long count2 = someString.codePoints().filter(ch -> ch == 'e').count();
assertEquals(2, count2);

Example 2: number of occurence in string

public class StringNumberOfOccurenceLetter {

    private static int countOccurences(String word, char character){

        int count = 0;
        for (int i = 0; i < word.length() ; i++) {
            if (word.charAt(i)==character){
                count++;
            }
        }
        return count;

    }
         public static void main(String[] args) {


        int count = countOccurences("dddssad", 'a');
    }

}