001 /*
002 * Copyright 1995-2000 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package java.lang;
027
028 /**
029 * An <code>Error</code> is a subclass of <code>Throwable</code>
030 * that indicates serious problems that a reasonable application
031 * should not try to catch. Most such errors are abnormal conditions.
032 * The <code>ThreadDeath</code> error, though a "normal" condition,
033 * is also a subclass of <code>Error</code> because most applications
034 * should not try to catch it.
035 * <p>
036 * A method is not required to declare in its <code>throws</code>
037 * clause any subclasses of <code>Error</code> that might be thrown
038 * during the execution of the method but not caught, since these
039 * errors are abnormal conditions that should never occur.
040 *
041 * @author Frank Yellin
042 * @version 1.23, 05/05/07
043 * @see java.lang.ThreadDeath
044 * @since JDK1.0
045 */
046 public class Error extends Throwable {
047 static final long serialVersionUID = 4980196508277280342L;
048
049 /**
050 * Constructs a new error with <code>null</code> as its detail message.
051 * The cause is not initialized, and may subsequently be initialized by a
052 * call to {@link #initCause}.
053 */
054 public Error() {
055 super ();
056 }
057
058 /**
059 * Constructs a new error with the specified detail message. The
060 * cause is not initialized, and may subsequently be initialized by
061 * a call to {@link #initCause}.
062 *
063 * @param message the detail message. The detail message is saved for
064 * later retrieval by the {@link #getMessage()} method.
065 */
066 public Error(String message) {
067 super (message);
068 }
069
070 /**
071 * Constructs a new error with the specified detail message and
072 * cause. <p>Note that the detail message associated with
073 * <code>cause</code> is <i>not</i> automatically incorporated in
074 * this error's detail message.
075 *
076 * @param message the detail message (which is saved for later retrieval
077 * by the {@link #getMessage()} method).
078 * @param cause the cause (which is saved for later retrieval by the
079 * {@link #getCause()} method). (A <tt>null</tt> value is
080 * permitted, and indicates that the cause is nonexistent or
081 * unknown.)
082 * @since 1.4
083 */
084 public Error(String message, Throwable cause) {
085 super (message, cause);
086 }
087
088 /**
089 * Constructs a new error with the specified cause and a detail
090 * message of <tt>(cause==null ? null : cause.toString())</tt> (which
091 * typically contains the class and detail message of <tt>cause</tt>).
092 * This constructor is useful for errors that are little more than
093 * wrappers for other throwables.
094 *
095 * @param cause the cause (which is saved for later retrieval by the
096 * {@link #getCause()} method). (A <tt>null</tt> value is
097 * permitted, and indicates that the cause is nonexistent or
098 * unknown.)
099 * @since 1.4
100 */
101 public Error(Throwable cause) {
102 super(cause);
103 }
104 }
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