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Java example source code file (TypeVariable.java)
The TypeVariable.java Java example source code/* * Copyright (c) 2003, 2013, 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; /** * TypeVariable is the common superinterface for type variables of kinds. * A type variable is created the first time it is needed by a reflective * method, as specified in this package. If a type variable t is referenced * by a type (i.e, class, interface or annotation type) T, and T is declared * by the nth enclosing class of T (see JLS 8.1.2), then the creation of t * requires the resolution (see JVMS 5) of the ith enclosing class of T, * for i = 0 to n, inclusive. Creating a type variable must not cause the * creation of its bounds. Repeated creation of a type variable has no effect. * * <p>Multiple objects may be instantiated at run-time to * represent a given type variable. Even though a type variable is * created only once, this does not imply any requirement to cache * instances representing the type variable. However, all instances * representing a type variable must be equal() to each other. * As a consequence, users of type variables must not rely on the identity * of instances of classes implementing this interface. * * @param <D> the type of generic declaration that declared the * underlying type variable. * * @since 1.5 */ public interface TypeVariable<D extends GenericDeclaration> extends Type, AnnotatedElement { /** * 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:
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