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## javax.lang.model.util
Class AbstractElementVisitor6<R,P>

    java.lang.Object
      javax.lang.model.util.AbstractElementVisitor6<R,P>

Type Parameters:
  `R` - the return type of this visitor's methods. Use `Void` for visitors that do not need to return results.
  `P` - the type of the additional parameter to this visitor's methods. Use `Void` for visitors that do not need an additional parameter.

All Implemented Interfaces:
  ElementVisitor<R,P>

Direct Known Subclasses:
  ElementScanner6, SimpleElementVisitor6

    @SupportedSourceVersion(value=RELEASE_6)
    public abstract class AbstractElementVisitor6<R,P>

extends Object
implements ElementVisitor<R,P>

A skeletal visitor of program elements with default behavior appropriate for the `RELEASE_6` source version.

WARNING: The `ElementVisitor` interface implemented by this class may have methods added to it in the future to accommodate new, currently unknown, language structures added to future versions of the Java™ programming language. Therefore, methods whose names begin with `"visit"` may be added to this class in the future; to avoid incompatibilities, classes which extend this class should not declare any instance methods with names beginning with `"visit"`.

When such a new visit method is added, the default implementation in this class will be to call the `visitUnknown` method. A new abstract element visitor class will also be introduced to correspond to the new language level; this visitor will have different default behavior for the visit method in question. When the new visitor is introduced, all or portions of this visitor may be deprecated.

Since:
  1.6

Constructor Summary
`protected` | `AbstractElementVisitor6()` Constructor for concrete subclasses to call.

Method Summary
`R` | `visit(Element e)` Visits any program element as if by passing itself to that element's `accept` method and passing `null` for the additional parameter.
`R` | `visit(Element e, P p)` Visits any program element as if by passing itself to that element's `accept` method.
`R` | `visitUnknown(Element e, P p)` Visits an unknown kind of element.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface javax.lang.model.element.ElementVisitor
`visitExecutable, visitPackage, visitType, visitTypeParameter, visitVariable`

Constructor Detail

### AbstractElementVisitor6

    protected AbstractElementVisitor6()

  Constructor for concrete subclasses to call.

Method Detail

### visit

    public final R visit(Element e,
                         P p)

  Visits any program element as if by passing itself to that element's `accept` method. The invocation `v.visit(elem)` is equivalent to `elem.accept(v, p)`.

  Specified by:
    `visit` in interface `ElementVisitor<R,P>`
  Parameters:
    `e` - the element to visit
    `p` - a visitor-specified parameter
  Returns:
    a visitor-specified result

### visit

    public final R visit(Element e)

  Visits any program element as if by passing itself to that element's `accept` method and passing `null` for the additional parameter. The invocation `v.visit(elem)` is equivalent to `elem.accept(v, null)`.

  Specified by:
    `visit` in interface `ElementVisitor<R,P>`
  Parameters:
    `e` - the element to visit
  Returns:
    a visitor-specified result

### visitUnknown

    public R visitUnknown(Element e,
                          P p)

  Visits an unknown kind of element. This can occur if the language evolves and new kinds of elements are added to the `Element` hierarchy.

  The default implementation of this method in `AbstractElementVisitor6` will always throw `UnknownElementException`. This behavior is not required of a subclass.

  Specified by:
    `visitUnknown` in interface `ElementVisitor<R,P>`
  Parameters:
    `e` - the element to visit
    `p` - a visitor-specified parameter
  Returns:
    a visitor-specified result
  Throws:
    `UnknownElementException` - a visitor implementation may optionally throw this exception

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