/*
 * 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 ?, ? extends Number, or ? super Integer.
Since:1.5
/** * 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 Type objects representing the upper bound(s) of this type variable. Note that if no upper bound is explicitly declared, the upper bound is Object.

For each upper bound B :

  • if B is a parameterized type or a type variable, it is created, (see ParameterizedType for the details of the creation process for parameterized types).
  • Otherwise, B is resolved.
Throws:
Returns:an array of Types representing the upper bound(s) of this type variable
/** * 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 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 null. In this case, a zero length array is returned.

For each lower bound B :

  • if B is a parameterized type or a type variable, it is created, (see ParameterizedType for the details of the creation process for parameterized types).
  • Otherwise, B is resolved.
Throws:
Returns:an array of Types representing the lower bound(s) of this type variable
/** * 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. }