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 }
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