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 */ InvocationTargetException()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 */ InvocationTargetException(Throwable target)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 */ InvocationTargetException(Throwable target, String s)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 */ getTargetException()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 */ getCause()108 public Throwable getCause() { 109 return target; 110 } 111 } 112