73 *
74 * <p>When such a new visit method is added, the default
75 * implementation in this class will be to call the {@link
76 * #visitUnknown visitUnknown} method. A new element scanner visitor
77 * class will also be introduced to correspond to the new language
78 * level; this visitor will have different default behavior for the
79 * visit method in question. When the new visitor is introduced, all
80 * or portions of this visitor may be deprecated.
81 *
82 * @param <R> the return type of this visitor's methods. Use {@link
83 * Void} for visitors that do not need to return results.
84 * @param <P> the type of the additional parameter to this visitor's
85 * methods. Use {@code Void} for visitors that do not need an
86 * additional parameter.
87 *
88 * @author Joseph D. Darcy
89 * @author Scott Seligman
90 * @author Peter von der Ahé
91 *
92 * @see ElementScanner7
93 * @since 1.6
94 */
95 @SupportedSourceVersion(RELEASE_6)
96 public class ElementScanner6<R, P> extends AbstractElementVisitor6<R, P> {
97 /**
98 * The specified default value.
99 */
100 protected final R DEFAULT_VALUE;
101
102 /**
103 * Constructor for concrete subclasses; uses {@code null} for the
104 * default value.
105 */
106 protected ElementScanner6(){
107 DEFAULT_VALUE = null;
108 }
109
110 /**
111 * Constructor for concrete subclasses; uses the argument for the
112 * default value.
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73 *
74 * <p>When such a new visit method is added, the default
75 * implementation in this class will be to call the {@link
76 * #visitUnknown visitUnknown} method. A new element scanner visitor
77 * class will also be introduced to correspond to the new language
78 * level; this visitor will have different default behavior for the
79 * visit method in question. When the new visitor is introduced, all
80 * or portions of this visitor may be deprecated.
81 *
82 * @param <R> the return type of this visitor's methods. Use {@link
83 * Void} for visitors that do not need to return results.
84 * @param <P> the type of the additional parameter to this visitor's
85 * methods. Use {@code Void} for visitors that do not need an
86 * additional parameter.
87 *
88 * @author Joseph D. Darcy
89 * @author Scott Seligman
90 * @author Peter von der Ahé
91 *
92 * @see ElementScanner7
93 * @see ElementScanner8
94 * @since 1.6
95 */
96 @SupportedSourceVersion(RELEASE_6)
97 public class ElementScanner6<R, P> extends AbstractElementVisitor6<R, P> {
98 /**
99 * The specified default value.
100 */
101 protected final R DEFAULT_VALUE;
102
103 /**
104 * Constructor for concrete subclasses; uses {@code null} for the
105 * default value.
106 */
107 protected ElementScanner6(){
108 DEFAULT_VALUE = null;
109 }
110
111 /**
112 * Constructor for concrete subclasses; uses the argument for the
113 * default value.
|