| class  | AbstractNumberValidator | Abstract class for number validator. | 
| class  | DoubleValidator | Validate input being any kind of  Number. | 
| class  | EmailValidator | Email format validation - accepts plain string and collection of strings, for basic behavior like null/blank values
 handling and collections support see  AbstractStringValidator. | 
| class  | IntegerValidator |  | 
| class  | LengthValidator | String value length validation - accepts plain string and collection of strings, for basic behavior like null/blank
 values handling and collections support see  AbstractStringValidator. | 
| class  | LocalDateValidator | A date validator that only takes into account the format associated with the current locale. | 
| class  | OptionsValidator | Validation against list of allowed values - accepts plain string and collection of strings (every value is validated against allowed values), for basic behavior like null/blank
 values handling and collections support see  AbstractStringValidator. | 
| class  | PatternValidator | Validate String against configured RegEx pattern - accepts plain string and collection of strings, for basic behavior
 like null/blank values handling and collections support see  AbstractStringValidator. |