| /* |
| * Copyright (c) 2003, 2004, 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 |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.lang.reflect; |
| |
| /** |
| * WildcardType represents a wildcard type expression, such as |
| * {@code ?}, {@code ? extends Number}, or {@code ? super Integer}. |
| * |
| * @since 1.5 |
| */ |
| public interface WildcardType extends Type { |
| /** |
| * Returns an array of {@code Type} objects representing the upper |
| * bound(s) of this type variable. Note that if no upper bound is |
| * explicitly declared, the upper bound is {@code Object}. |
| * |
| * <p>For each upper bound B : |
| * <ul> |
| * <li>if B is a parameterized type or a type variable, it is created, |
| * (see {@link java.lang.reflect.ParameterizedType ParameterizedType} |
| * for the details of the creation process for parameterized types). |
| * <li>Otherwise, B is resolved. |
| * </ul> |
| * |
| * @return an array of Types representing the upper bound(s) of this |
| * type variable |
| * @throws TypeNotPresentException if any of the |
| * bounds refers to a non-existent type declaration |
| * @throws MalformedParameterizedTypeException if any of the |
| * bounds refer to a parameterized type that cannot be instantiated |
| * for any reason |
| */ |
| Type[] getUpperBounds(); |
| |
| /** |
| * Returns an array of {@code Type} objects representing the |
| * lower bound(s) of this type variable. Note that if no lower bound is |
| * explicitly declared, the lower bound is the type of {@code null}. |
| * In this case, a zero length array is returned. |
| * |
| * <p>For each lower bound B : |
| * <ul> |
| * <li>if B is a parameterized type or a type variable, it is created, |
| * (see {@link java.lang.reflect.ParameterizedType ParameterizedType} |
| * for the details of the creation process for parameterized types). |
| * <li>Otherwise, B is resolved. |
| * </ul> |
| * |
| * @return an array of Types representing the lower bound(s) of this |
| * type variable |
| * @throws TypeNotPresentException if any of the |
| * bounds refers to a non-existent type declaration |
| * @throws MalformedParameterizedTypeException if any of the |
| * bounds refer to a parameterized type that cannot be instantiated |
| * for any reason |
| */ |
| Type[] getLowerBounds(); |
| // one or many? Up to language spec; currently only one, but this API |
| // allows for generalization. |
| } |