| FormErrors | A container of field and one or more associated errors, to be displayed in a form. |
| BaseUrlValidator<T extends Annotation> | Base class to validate the base URL of the HTTP and SSH protocols. |
| ConditionalNotEmptyValidator | |
| ConstraintNature | |
| ConstraintNature.Conflict | |
| FieldEqualsValidator | Validate that multiple fields are identical. |
| HttpURLValidator | Validate that the string is a valid http or https URL. |
| IntegerValidator | Validate a value can be converted to an Integer,
optionally validating whether the number is positive. |
| IntValidator | Validator for the Int annotation. |
| NonNegativeIntValidator | Validator for the NonNegativeInt annotation. |
| OptionalStringValidator | Validator for the OptionalString annotation. |
| SimpleFormErrors | Simple implementation of FormErrors as a plain Java object with a builder,
|
| SimpleFormErrors.Builder |
| ArgumentValidationException | |
| FormValidationException | Exception to represent possible validation errors. |