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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 | } | ||