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| 1 | /* | ||
| 2 | * Copyright (c) 1996, 2004, 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 | * InvocationTargetException is a checked exception that wraps | ||
| 30 | * an exception thrown by an invoked method or constructor. | ||
| 31 | * | ||
| 32 | * <p>As of release 1.4, this exception has been retrofitted to conform to | ||
| 33 | * the general purpose exception-chaining mechanism. The "target exception" | ||
| 34 | * that is provided at construction time and accessed via the | ||
| 35 | * {@link #getTargetException()} method is now known as the <i>cause</i>, | ||
| 36 | * and may be accessed via the {@link Throwable#getCause()} method, | ||
| 37 | * as well as the aforementioned "legacy method." | ||
| 38 | * | ||
| 39 | * @see Method | ||
| 40 | * @see Constructor | ||
| 41 | */ | ||
| 42 | public class InvocationTargetException extends ReflectiveOperationException { | ||
| 43 | /** | ||
| 44 | * Use serialVersionUID from JDK 1.1.X for interoperability | ||
| 45 | */ | ||
| 46 | private static final long serialVersionUID = 4085088731926701167L; | ||
| 47 | |||
| 48 | /** | ||
| 49 | * This field holds the target if the | ||
| 50 | * InvocationTargetException(Throwable target) constructor was | ||
| 51 | * used to instantiate the object | ||
| 52 | * | ||
| 53 | * @serial | ||
| 54 | * | ||
| 55 | */ | ||
| 56 | private Throwable target; | ||
| 57 | |||
| 58 | /** | ||
| 59 | * Constructs an {@code InvocationTargetException} with | ||
| 60 | * {@code null} as the target exception. | ||
| 61 | */ | ||
| 62 | protected InvocationTargetException() { | ||
| 63 | super((Throwable)null); // Disallow initCause | ||
| 64 | } | ||
| 65 | |||
| 66 | /** | ||
| 67 | * Constructs a InvocationTargetException with a target exception. | ||
| 68 | * | ||
| 69 | * @param target the target exception | ||
| 70 | */ | ||
| 71 | public InvocationTargetException(Throwable target) { | ||
| 72 | super((Throwable)null); // Disallow initCause | ||
| 73 | this.target = target; | ||
| 74 | } | ||
| 75 | |||
| 76 | /** | ||
| 77 | * Constructs a InvocationTargetException with a target exception | ||
| 78 | * and a detail message. | ||
| 79 | * | ||
| 80 | * @param target the target exception | ||
| 81 | * @param s the detail message | ||
| 82 | */ | ||
| 83 | public InvocationTargetException(Throwable target, String s) { | ||
| 84 | super(s, null); // Disallow initCause | ||
| 85 | this.target = target; | ||
| 86 | } | ||
| 87 | |||
| 88 | /** | ||
| 89 | * Get the thrown target exception. | ||
| 90 | * | ||
| 91 | * <p>This method predates the general-purpose exception chaining facility. | ||
| 92 | * The {@link Throwable#getCause()} method is now the preferred means of | ||
| 93 | * obtaining this information. | ||
| 94 | * | ||
| 95 | * @return the thrown target exception (cause of this exception). | ||
| 96 | */ | ||
| 97 | public Throwable getTargetException() { | ||
| 98 | return target; | ||
| 99 | } | ||
| 100 | |||
| 101 | /** | ||
| 102 | * Returns the cause of this exception (the thrown target exception, | ||
| 103 | * which may be {@code null}). | ||
| 104 | * | ||
| 105 | * @return the cause of this exception. | ||
| 106 | * @since 1.4 | ||
| 107 | */ | ||
| 108 | public Throwable getCause() { | ||
| 109 | return target; | ||
| 110 | } | ||
| 111 | } | ||