53  * classes which extend this class should not declare any instance
  54  * methods with names beginning with {@code "visit"}.
  55  *
  56  * <p>When such a new visit method is added, the default
  57  * implementation in this class will be to call the {@link
  58  * #visitUnknown visitUnknown} method.  A new simple type visitor
  59  * class will also be introduced to correspond to the new language
  60  * level; this visitor will have different default behavior for the
  61  * visit method in question.  When the new visitor is introduced, all
  62  * or portions of this visitor may be deprecated.
  63  *
  64  * @param <R> the return type of this visitor's methods.  Use {@link
  65  *            Void} for visitors that do not need to return results.
  66  * @param <P> the type of the additional parameter to this visitor's
  67  *            methods.  Use {@code Void} for visitors that do not need an
  68  *            additional parameter.
  69  *
  70  * @author Joseph D. Darcy
  71  * @author Scott Seligman
  72  * @author Peter von der Ah&eacute;


  73  * @since 1.6
  74  */
  75 @SupportedSourceVersion(RELEASE_6)
  76 public class SimpleTypeVisitor6<R, P> extends AbstractTypeVisitor6<R, P> {
  77     /**
  78      * Default value to be returned; {@link #defaultAction
  79      * defaultAction} returns this value unless the method is
  80      * overridden.
  81      */
  82     protected final R DEFAULT_VALUE;
  83 
  84     /**
  85      * Constructor for concrete subclasses; uses {@code null} for the
  86      * default value.
  87      */
  88     protected SimpleTypeVisitor6(){
  89         DEFAULT_VALUE = null;
  90     }
  91 
  92     /**

  53  * classes which extend this class should not declare any instance
  54  * methods with names beginning with {@code "visit"}.
  55  *
  56  * <p>When such a new visit method is added, the default
  57  * implementation in this class will be to call the {@link
  58  * #visitUnknown visitUnknown} method.  A new simple type visitor
  59  * class will also be introduced to correspond to the new language
  60  * level; this visitor will have different default behavior for the
  61  * visit method in question.  When the new visitor is introduced, all
  62  * or portions of this visitor may be deprecated.
  63  *
  64  * @param <R> the return type of this visitor's methods.  Use {@link
  65  *            Void} for visitors that do not need to return results.
  66  * @param <P> the type of the additional parameter to this visitor's
  67  *            methods.  Use {@code Void} for visitors that do not need an
  68  *            additional parameter.
  69  *
  70  * @author Joseph D. Darcy
  71  * @author Scott Seligman
  72  * @author Peter von der Ah&eacute;
  73  *
  74  * @see SimpleTypeVisitor7
  75  * @since 1.6
  76  */
  77 @SupportedSourceVersion(RELEASE_6)
  78 public class SimpleTypeVisitor6<R, P> extends AbstractTypeVisitor6<R, P> {
  79     /**
  80      * Default value to be returned; {@link #defaultAction
  81      * defaultAction} returns this value unless the method is
  82      * overridden.
  83      */
  84     protected final R DEFAULT_VALUE;
  85 
  86     /**
  87      * Constructor for concrete subclasses; uses {@code null} for the
  88      * default value.
  89      */
  90     protected SimpleTypeVisitor6(){
  91         DEFAULT_VALUE = null;
  92     }
  93 
  94     /**