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| 1 | +/* | |
| 2 | + * Copyright (c) 1999, 2006, 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 | + * Thrown by a method invocation on a proxy instance if its invocation | |
| 30 | + * handler's {@link InvocationHandler#invoke invoke} method throws a | |
| 31 | + * checked exception (a {@code Throwable} that is not assignable | |
| 32 | + * to {@code RuntimeException} or {@code Error}) that | |
| 33 | + * is not assignable to any of the exception types declared in the | |
| 34 | + * {@code throws} clause of the method that was invoked on the | |
| 35 | + * proxy instance and dispatched to the invocation handler. | |
| 36 | + * | |
| 37 | + * <p>An {@code UndeclaredThrowableException} instance contains | |
| 38 | + * the undeclared checked exception that was thrown by the invocation | |
| 39 | + * handler, and it can be retrieved with the | |
| 40 | + * {@code getUndeclaredThrowable()} method. | |
| 41 | + * {@code UndeclaredThrowableException} extends | |
| 42 | + * {@code RuntimeException}, so it is an unchecked exception | |
| 43 | + * that wraps a checked exception. | |
| 44 | + * | |
| 45 | + * <p>As of release 1.4, this exception has been retrofitted to | |
| 46 | + * conform to the general purpose exception-chaining mechanism. The | |
| 47 | + * "undeclared checked exception that was thrown by the invocation | |
| 48 | + * handler" that may be provided at construction time and accessed via | |
| 49 | + * the {@link #getUndeclaredThrowable()} method is now known as the | |
| 50 | + * <i>cause</i>, and may be accessed via the {@link | |
| 51 | + * Throwable#getCause()} method, as well as the aforementioned "legacy | |
| 52 | + * method." | |
| 53 | + * | |
| 54 | + * @author Peter Jones | |
| 55 | + * @see InvocationHandler | |
| 56 | + * @since 1.3 | |
| 57 | + */ | |
| 58 | +public class UndeclaredThrowableException extends RuntimeException { | |
| 59 | + static final long serialVersionUID = 330127114055056639L; | |
| 60 | + | |
| 61 | + /** | |
| 62 | + * the undeclared checked exception that was thrown | |
| 63 | + * @serial | |
| 64 | + */ | |
| 65 | + private Throwable undeclaredThrowable; | |
| 66 | + | |
| 67 | + /** | |
| 68 | + * Constructs an {@code UndeclaredThrowableException} with the | |
| 69 | + * specified {@code Throwable}. | |
| 70 | + * | |
| 71 | + * @param undeclaredThrowable the undeclared checked exception | |
| 72 | + * that was thrown | |
| 73 | + */ | |
| 74 | + public UndeclaredThrowableException(Throwable undeclaredThrowable) { | |
| 75 | + super((Throwable) null); // Disallow initCause | |
| 76 | + this.undeclaredThrowable = undeclaredThrowable; | |
| 77 | + } | |
| 78 | + | |
| 79 | + /** | |
| 80 | + * Constructs an {@code UndeclaredThrowableException} with the | |
| 81 | + * specified {@code Throwable} and a detail message. | |
| 82 | + * | |
| 83 | + * @param undeclaredThrowable the undeclared checked exception | |
| 84 | + * that was thrown | |
| 85 | + * @param s the detail message | |
| 86 | + */ | |
| 87 | + public UndeclaredThrowableException(Throwable undeclaredThrowable, | |
| 88 | + String s) | |
| 89 | + { | |
| 90 | + super(s, null); // Disallow initCause | |
| 91 | + this.undeclaredThrowable = undeclaredThrowable; | |
| 92 | + } | |
| 93 | + | |
| 94 | + /** | |
| 95 | + * Returns the {@code Throwable} instance wrapped in this | |
| 96 | + * {@code UndeclaredThrowableException}, which may be {@code null}. | |
| 97 | + * | |
| 98 | + * <p>This method predates the general-purpose exception chaining facility. | |
| 99 | + * The {@link Throwable#getCause()} method is now the preferred means of | |
| 100 | + * obtaining this information. | |
| 101 | + * | |
| 102 | + * @return the undeclared checked exception that was thrown | |
| 103 | + */ | |
| 104 | + public Throwable getUndeclaredThrowable() { | |
| 105 | + return undeclaredThrowable; | |
| 106 | + } | |
| 107 | + | |
| 108 | + /** | |
| 109 | + * Returns the cause of this exception (the {@code Throwable} | |
| 110 | + * instance wrapped in this {@code UndeclaredThrowableException}, | |
| 111 | + * which may be {@code null}). | |
| 112 | + * | |
| 113 | + * @return the cause of this exception. | |
| 114 | + * @since 1.4 | |
| 115 | + */ | |
| 116 | + public Throwable getCause() { | |
| 117 | + return undeclaredThrowable; | |
| 118 | + } | |
| 119 | +} | |