javax.lang.model.element

## Class UnknownAnnotationValueException

- java.lang.Object
- - java.lang.Throwable
  - - java.lang.Exception
    - - java.lang.RuntimeException
      - - javax.lang.model.UnknownEntityException
        - - javax.lang.model.element.UnknownAnnotationValueException

- All Implemented Interfaces:
    Serializable

      public class UnknownAnnotationValueException
      extends UnknownEntityException

  Indicates that an unknown kind of annotation value was encountered. This can occur if the language evolves and new kinds of annotation values can be stored in an annotation. May be thrown by an annotation value visitor to indicate that the visitor was created for a prior version of the language.
  Since:
    1.6
  See Also:
    `AnnotationValueVisitor.visitUnknown(javax.lang.model.element.AnnotationValue, P)`, Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `UnknownAnnotationValueException(AnnotationValue av, Object p)` Creates a new `UnknownAnnotationValueException`.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `getArgument()` Returns the additional argument.
    `AnnotationValue` | `getUnknownAnnotationValue()` Returns the unknown annotation value.

    - ### Methods inherited from class java.lang.Throwable

      `addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### UnknownAnnotationValueException

          public UnknownAnnotationValueException(AnnotationValue av,
                                         Object p)

      Creates a new `UnknownAnnotationValueException`. The `p` parameter may be used to pass in an additional argument with information about the context in which the unknown annotation value was encountered; for example, the visit methods of `AnnotationValueVisitor` may pass in their additional parameter.
      Parameters:
        `av` - the unknown annotation value, may be `null`
        `p` - an additional parameter, may be `null`

  - ### Method Detail

    - #### getUnknownAnnotationValue

          public AnnotationValue getUnknownAnnotationValue()

      Returns the unknown annotation value. The value may be unavailable if this exception has been serialized and then read back in.
      Returns:
        the unknown element, or `null` if unavailable

    - #### getArgument

          public Object getArgument()

      Returns the additional argument.
      Returns:
        the additional argument

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