```
@Retention(RUNTIME)
@Target({TYPE,FIELD,METHOD,PARAMETER})
@Inherited
@Qualifier
public @interface FacesConverter
```
The presence of this annotation on a class automatically registers the class with the runtime as a Converter. The value of the value() attribute is taken to be converter-id, the value of the forClass() attribute is taken to be converter-for-class and the fully qualified class name of the class to which this annotation is attached is taken to be the converter-class. The implementation must guarantee that for each class annotated with FacesConverter, found with the algorithm in section JSF.11.5, the proper variant of Application.addConverter() is called. If converter-id is not the empty string, Application.addConverter(java.lang.String,java.lang.String) is called, passing the derived converter-id as the first argument and the derived converter-class as the second argument. If converter-id is the empty string, Application.addConverter(java.lang.Class,java.lang.String) is called, passing the converter-for-class as the first argument and the derived converter-class as the second argument. The implementation must guarantee that all such calls to addConverter() happen during application startup time and before any requests are serviced.

The preceding text contains an important subtlety which application users should understand. It is not possible to use a single @FacesConverter annotation to register a single Converter implementation both in the by-class and the by-converter-id data structures. One way to achieve this result is to put the actual converter logic in an abstract base class, without a @FacesConverter annotation, and derive two sub-classes, each with a @FacesConverter annotation. One sub-class has a value attribute but no forClass attribute, and the other sub-class has the converse.

Please see the ViewDeclarationLanguage documentation for <h:selectManyListBox> for another important subtlety regarding converters and collections.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`java.lang.Class`	`forClass`	The value of this annotation attribute is taken to be the converter-for-class with which instances of this class of converter can be instantiated by calling `Application.createConverter(java.lang.Class)`.
`boolean`	`managed`	The value of this annotation attribute is taken to be an indicator that flags whether or not the given converter is a CDI managed converter.
`java.lang.String`	`value`	The value of this annotation attribute is taken to be the converter-id with which instances of this class of converter can be instantiated by calling `Application.createConverter(java.lang.String)`.

- Element Detail
  - value
```
java.lang.String value
```
    The value of this annotation attribute is taken to be the converter-id with which instances of this class of converter can be instantiated by calling Application.createConverter(java.lang.String).
    
    Returns:
    
    the converter-id
    
    Default:
    
    ""
- - forClass
```
java.lang.Class forClass
```
    The value of this annotation attribute is taken to be the converter-for-class with which instances of this class of converter can be instantiated by calling Application.createConverter(java.lang.Class).
    
    Returns:
    
    the class
    
    Default:
    
    java.lang.Object.class
- - managed
```
boolean managed
```
    The value of this annotation attribute is taken to be an indicator that flags whether or not the given converter is a CDI managed converter.
    
    Returns:
    
    whether or not this converter is managed by CDI
    
    Default:
    
    false

Annotation Type FacesConverter

Optional Element Summary

Element Detail

value

forClass

managed