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package javax.lang.model.element;


Represents a value of an annotation type element.
A value is of one of the following types:

  •  a wrapper class (such as Integer) for a primitive type 
  •  String 
  •  TypeMirror 
  •  VariableElement (representing an enum constant) 
  •  AnnotationMirror 
  •  List<? extends AnnotationValue> (representing the elements, in declared order, if the value is an array) 


Author:Joseph D. Darcy, Scott Seligman, Peter von der Ahé
Since:1.6
/**
 * Represents a value of an annotation type element.
 * A value is of one of the following types:
 * <ul><li> a wrapper class (such as {@link Integer}) for a primitive type
 *     <li> {@code String}
 *     <li> {@code TypeMirror}
 *     <li> {@code VariableElement} (representing an enum constant)
 *     <li> {@code AnnotationMirror}
 *     <li> {@code List<? extends AnnotationValue>}
 *              (representing the elements, in declared order, if the value is an array)
 * </ul>
 *
 * @author Joseph D. Darcy
 * @author Scott Seligman
 * @author Peter von der Ah&eacute;
 * @since 1.6
 */
public interface AnnotationValue {

    
Returns the value.

Returns:the value
/**
     * Returns the value.
     *
     * @return the value
     */
    Object getValue();

    
Returns a string representation of this value.
This is returned in a form suitable for representing this value
in the source code of an annotation.

Returns:a string representation of this value
/**
     * Returns a string representation of this value.
     * This is returned in a form suitable for representing this value
     * in the source code of an annotation.
     *
     * @return a string representation of this value
     */
    String toString();

    
Applies a visitor to this value.

Params:
  • v –   the visitor operating on this value
  • p –   additional parameter to the visitor
Type parameters:
  • <R> – the return type of the visitor's methods
  • <P> – the type of the additional parameter to the visitor's methods
Returns:a visitor-specified result
/**
     * Applies a visitor to this value.
     *
     * @param <R> the return type of the visitor's methods
     * @param <P> the type of the additional parameter to the visitor's methods
     * @param v   the visitor operating on this value
     * @param p   additional parameter to the visitor
     * @return a visitor-specified result
     */
    <R, P> R accept(AnnotationValueVisitor<R, P> v, P p);
}