44 * subclasses with {@link java.lang.Override @Override} will help
45 * ensure that methods are overridden as intended.
46 *
47 * <p> <b>WARNING:</b> The {@code ElementVisitor} interface
48 * implemented by this class may have methods added to it in the
49 * future to accommodate new, currently unknown, language structures
50 * added to future versions of the Java™ programming language.
51 * Therefore, methods whose names begin with {@code "visit"} may be
52 * added to this class in the future; to avoid incompatibilities,
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 element 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 * <p>Note that adding a default implementation of a new visit method
65 * in a visitor class will occur instead of adding a <em>default
66 * method</em> directly in the visitor interface since a Java SE 8
67 * language feature cannot be used to this version of the API since
68 * this version is required to be runnable on Java SE 7
69 * implementations. Future versions of the API that are only required
70 * to run on Java SE 8 and later may take advantage of default methods
71 * in this situation.
72 *
73 * @param <R> the return type of this visitor's methods. Use {@code Void}
74 * for visitors that do not need to return results.
75 * @param <P> the type of the additional parameter to this visitor's methods. Use {@code Void}
76 * for visitors that do not need an additional parameter.
77 *
78 * @see SimpleElementVisitor6
79 * @see SimpleElementVisitor7
80 * @see SimpleElementVisitor9
81 * @since 1.8
82 */
83 @SupportedSourceVersion(RELEASE_8)
84 public class SimpleElementVisitor8<R, P> extends SimpleElementVisitor7<R, P> {
85 /**
86 * Constructor for concrete subclasses; uses {@code null} for the
87 * default value.
88 */
89 protected SimpleElementVisitor8(){
90 super(null);
91 }
92
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44 * subclasses with {@link java.lang.Override @Override} will help
45 * ensure that methods are overridden as intended.
46 *
47 * <p> <b>WARNING:</b> The {@code ElementVisitor} interface
48 * implemented by this class may have methods added to it in the
49 * future to accommodate new, currently unknown, language structures
50 * added to future versions of the Java™ programming language.
51 * Therefore, methods whose names begin with {@code "visit"} may be
52 * added to this class in the future; to avoid incompatibilities,
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 element 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 {@code Void}
65 * for visitors that do not need to return results.
66 * @param <P> the type of the additional parameter to this visitor's methods. Use {@code Void}
67 * for visitors that do not need an additional parameter.
68 *
69 * @see SimpleElementVisitor6
70 * @see SimpleElementVisitor7
71 * @see SimpleElementVisitor9
72 * @since 1.8
73 */
74 @SupportedSourceVersion(RELEASE_8)
75 public class SimpleElementVisitor8<R, P> extends SimpleElementVisitor7<R, P> {
76 /**
77 * Constructor for concrete subclasses; uses {@code null} for the
78 * default value.
79 */
80 protected SimpleElementVisitor8(){
81 super(null);
82 }
83
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