--- old/src/java.compiler/share/classes/javax/lang/model/util/ElementKindVisitor9.java 2020-03-13 20:21:16.630000000 -0700 +++ new/src/java.compiler/share/classes/javax/lang/model/util/ElementKindVisitor9.java 2020-03-13 20:21:16.266000000 -0700 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -44,29 +44,9 @@ * call {@link #defaultAction defaultAction}, passing their arguments * to {@code defaultAction}'s corresponding parameters. * - *

Methods in this class may be overridden subject to their - * general contract. Note that annotating methods in concrete - * subclasses with {@link java.lang.Override @Override} will help - * ensure that methods are overridden as intended. - * - *

WARNING: The {@code ElementVisitor} interface - * implemented by this class may have methods added to it or the - * {@code ElementKind} {@code enum} used in this case may have - * constants 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 {@code "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 - * {@code "visit"}. - * - *

When such a new visit method is added, the default - * implementation in this class will be to call the {@link - * #visitUnknown visitUnknown} method. A new abstract element kind - * 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. + * @apiNote + * Methods in this class may be overridden subject to their + * general contract. * * @param the return type of this visitor's methods. Use {@link * Void} for visitors that do not need to return results. @@ -74,6 +54,8 @@ * methods. Use {@code Void} for visitors that do not need an * additional parameter. * + * @see + * Compatibility note for subclasses * @see ElementKindVisitor6 * @see ElementKindVisitor7 * @see ElementKindVisitor8