FacesValidator

```
@Retention(RUNTIME)
@Target(TYPE)
@Inherited
public @interface FacesValidator
```
The presence of this annotation on a class automatically registers the class with the runtime as a Validator. The value of the value() attribute is taken to be the validator-id and the fully qualified class name of the class to which this annotation is attached is taken to be the validator-class. The implementation must guarantee that for each class annotated with FacesValidator, found with the algorithm in section JSF.11.5, Application.addValidator(java.lang.String,java.lang.String) is called, passing the derived validator-id as the first argument and the derived validator-class as the second argument. The implementation must guarantee that all such calls to addValidator() happen during application startup time and before any requests are serviced.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`boolean`	`isDefault`	If `true`, the validator id for this annotation is added to the list of default validators by a call to `Application.addDefaultValidatorId(java.lang.String)`.
`java.lang.String`	`value`	The value of this annotation attribute is taken to be the validator-id with which instances of this class of component can be instantiated by calling `Application.createValidator(java.lang.String)`.

- Element Detail
  - value
```
java.lang.String value
```
    The value of this annotation attribute is taken to be the validator-id with which instances of this class of component can be instantiated by calling Application.createValidator(java.lang.String). If no value is specified, or the value is null, the value is taken to be the return of calling getSimpleName on the class to which this annotation is attached and lowercasing the first character. If more than one validator with this derived name is found, the results are undefined.
    
    Default:
    
    ""
- - isDefault
```
boolean isDefault
```
    If true, the validator id for this annotation is added to the list of default validators by a call to Application.addDefaultValidatorId(java.lang.String).
    
    Default:
    
    false