how to count character occurrences in a given string in 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: count the number of occurrences of a character in a string java

String line = "apples.oranges.bananas";
int count = line.length() - line.replace(".", "").length();
System.out.println(count);//displays 2