Showing the changes to java/pkg/java/lang/reflect/TypeVariable.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,89 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package java.lang.reflect; | |
| 27 | + | |
| 28 | +/** | |
| 29 | + * TypeVariable is the common superinterface for type variables of kinds. | |
| 30 | + * A type variable is created the first time it is needed by a reflective | |
| 31 | + * method, as specified in this package. If a type variable t is referenced | |
| 32 | + * by a type (i.e, class, interface or annotation type) T, and T is declared | |
| 33 | + * by the nth enclosing class of T (see JLS 8.1.2), then the creation of t | |
| 34 | + * requires the resolution (see JVMS 5) of the ith enclosing class of T, | |
| 35 | + * for i = 0 to n, inclusive. Creating a type variable must not cause the | |
| 36 | + * creation of its bounds. Repeated creation of a type variable has no effect. | |
| 37 | + * | |
| 38 | + * <p>Multiple objects may be instantiated at run-time to | |
| 39 | + * represent a given type variable. Even though a type variable is | |
| 40 | + * created only once, this does not imply any requirement to cache | |
| 41 | + * instances representing the type variable. However, all instances | |
| 42 | + * representing a type variable must be equal() to each other. | |
| 43 | + * As a consequence, users of type variables must not rely on the identity | |
| 44 | + * of instances of classes implementing this interface. | |
| 45 | + * | |
| 46 | + * @param <D> the type of generic declaration that declared the | |
| 47 | + * underlying type variable. | |
| 48 | + * | |
| 49 | + * @since 1.5 | |
| 50 | + */ | |
| 51 | +public interface TypeVariable<D extends GenericDeclaration> extends Type { | |
| 52 | + /** | |
| 53 | + * Returns an array of {@code Type} objects representing the | |
| 54 | + * upper bound(s) of this type variable. Note that if no upper bound is | |
| 55 | + * explicitly declared, the upper bound is {@code Object}. | |
| 56 | + * | |
| 57 | + * <p>For each upper bound B: <ul> <li>if B is a parameterized | |
| 58 | + * type or a type variable, it is created, (see {@link | |
| 59 | + * java.lang.reflect.ParameterizedType ParameterizedType} for the | |
| 60 | + * details of the creation process for parameterized types). | |
| 61 | + * <li>Otherwise, B is resolved. </ul> | |
| 62 | + * | |
| 63 | + * @throws TypeNotPresentException if any of the | |
| 64 | + * bounds refers to a non-existent type declaration | |
| 65 | + * @throws MalformedParameterizedTypeException if any of the | |
| 66 | + * bounds refer to a parameterized type that cannot be instantiated | |
| 67 | + * for any reason | |
| 68 | + * @return an array of {@code Type}s representing the upper | |
| 69 | + * bound(s) of this type variable | |
| 70 | + */ | |
| 71 | + Type[] getBounds(); | |
| 72 | + | |
| 73 | + /** | |
| 74 | + * Returns the {@code GenericDeclaration} object representing the | |
| 75 | + * generic declaration declared this type variable. | |
| 76 | + * | |
| 77 | + * @return the generic declaration declared for this type variable. | |
| 78 | + * | |
| 79 | + * @since 1.5 | |
| 80 | + */ | |
| 81 | + D getGenericDeclaration(); | |
| 82 | + | |
| 83 | + /** | |
| 84 | + * Returns the name of this type variable, as it occurs in the source code. | |
| 85 | + * | |
| 86 | + * @return the name of this type variable, as it appears in the source code | |
| 87 | + */ | |
| 88 | + String getName(); | |
| 89 | +} | |