Java program to intake string & print occurrence of each character(Java Interview Question

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By using Stream APIs
Scanner scanner = new Scanner(System.in);
System.out.print("Enter string: ");
String userInput = scanner.nextLine().trim().replace(" ", "");
Map characterAndCount = userInput.chars()
.mapToObj(i -> (char) i)
.collect(Collectors.groupingBy(Function.identity(),
Collectors.counting()));
//to print the characters and its count.
characterAndCount.forEach((character, aLong) -> System.out.println(character + " : " + aLong));