1 /* 2 * Copyright 1995-2000 Sun Microsystems, Inc. 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. Sun designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 22 * CA 95054 USA or visit www.sun.com if you need additional information or 23 * have any questions. 24 */ 25 26 package java.lang; 27 28 /** 29 * An <code>Error</code> is a subclass of <code>Throwable</code> 30 * that indicates serious problems that a reasonable application 31 * should not try to catch. Most such errors are abnormal conditions. 32 * The <code>ThreadDeath</code> error, though a "normal" condition, 33 * is also a subclass of <code>Error</code> because most applications 34 * should not try to catch it. 35 * <p> 36 * A method is not required to declare in its <code>throws</code> 37 * clause any subclasses of <code>Error</code> that might be thrown 38 * during the execution of the method but not caught, since these 39 * errors are abnormal conditions that should never occur. 40 * 41 * @author Frank Yellin 42 * @see java.lang.ThreadDeath 43 * @since JDK1.0 44 */ 45 public class Error extends Throwable { 46 static final long serialVersionUID = 4980196508277280342L; 47 48 /** 49 * Constructs a new error with <code>null</code> as its detail message. 50 * The cause is not initialized, and may subsequently be initialized by a 51 * call to {@link #initCause}. 52 */ 53 public Error() { 54 super(); 55 } 56 57 /** 58 * Constructs a new error with the specified detail message. The 59 * cause is not initialized, and may subsequently be initialized by 60 * a call to {@link #initCause}. 61 * 62 * @param message the detail message. The detail message is saved for 63 * later retrieval by the {@link #getMessage()} method. 64 */ 65 public Error(String message) { 66 super(message); 67 } 68 69 /** 70 * Constructs a new error with the specified detail message and 71 * cause. <p>Note that the detail message associated with 72 * <code>cause</code> is <i>not</i> automatically incorporated in 73 * this error's detail message. 74 * 75 * @param message the detail message (which is saved for later retrieval 76 * by the {@link #getMessage()} method). 77 * @param cause the cause (which is saved for later retrieval by the 78 * {@link #getCause()} method). (A <tt>null</tt> value is 79 * permitted, and indicates that the cause is nonexistent or 80 * unknown.) 81 * @since 1.4 82 */ 83 public Error(String message, Throwable cause) { 84 super(message, cause); 85 } 86 87 /** 88 * Constructs a new error with the specified cause and a detail 89 * message of <tt>(cause==null ? null : cause.toString())</tt> (which 90 * typically contains the class and detail message of <tt>cause</tt>). 91 * This constructor is useful for errors that are little more than 92 * wrappers for other throwables. 93 * 94 * @param cause the cause (which is saved for later retrieval by the 95 * {@link #getCause()} method). (A <tt>null</tt> value is 96 * permitted, and indicates that the cause is nonexistent or 97 * unknown.) 98 * @since 1.4 99 */ 100 public Error(Throwable cause) { 101 super(cause); 102 } 103 }