protected List getInvalidCharacters()

in src/main/java/com/epam/digital/data/platform/user/validate/CharactersValidator.java [8:17]

• 10 lines of code
• 3 McCabe index (conditional complexity)

  protected List<String> getInvalidCharacters(String str, String validCharactersPattern) {
    List<String> invalidCharacters = new ArrayList<>();
    for(int i = 0; i < str.length(); i++) {
      var character = Character.toString(str.charAt(i));
      if(!character.matches(validCharactersPattern)) {
        invalidCharacters.add(character);
      }
    }
    return invalidCharacters;
  }