1 /*
2 * Copyright (c) 1995, 2011, 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;
27
28 /**
29 * An {@code Error} is a subclass of {@code Throwable}
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} error, though a "normal" condition,
33 * is also a subclass of {@code Error} because most applications
34 * should not try to catch it.
35 * <p>
36 * A method is not required to declare in its {@code throws}
37 * clause any subclasses of {@code Error} 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 * That is, {@code Error} and its subclasses are regarded as unchecked
42 * exceptions for the purposes of compile-time checking of exceptions.
43 *
44 * @author Frank Yellin
45 * @see java.lang.ThreadDeath
46 * @jls 11.2 Compile-Time Checking of Exceptions
47 * @since 1.0
48 */
49 public class Error extends Throwable {
50 @java.io.Serial
51 static final long serialVersionUID = 4980196508277280342L;
52
53 /**
54 * Constructs a new error with {@code null} as its detail message.
55 * The cause is not initialized, and may subsequently be initialized by a
56 * call to {@link #initCause}.
57 */
58 public Error() {
59 super();
60 }
61
62 /**
63 * Constructs a new error with the specified detail message. The
64 * cause is not initialized, and may subsequently be initialized by
65 * a call to {@link #initCause}.
66 *
67 * @param message the detail message. The detail message is saved for
68 * later retrieval by the {@link #getMessage()} method.
69 */
70 public Error(String message) {
71 super(message);
72 }
73
74 /**
75 * Constructs a new error with the specified detail message and
76 * cause. <p>Note that the detail message associated with
77 * {@code cause} is <i>not</i> automatically incorporated in
78 * this error's detail message.
79 *
80 * @param message the detail message (which is saved for later retrieval
81 * by the {@link #getMessage()} method).
82 * @param cause the cause (which is saved for later retrieval by the
83 * {@link #getCause()} method). (A {@code null} value is
84 * permitted, and indicates that the cause is nonexistent or
85 * unknown.)
86 * @since 1.4
87 */
88 public Error(String message, Throwable cause) {
89 super(message, cause);
90 }
91
92 /**
93 * Constructs a new error with the specified cause and a detail
94 * message of {@code (cause==null ? null : cause.toString())} (which
95 * typically contains the class and detail message of {@code cause}).
96 * This constructor is useful for errors that are little more than
97 * wrappers for other throwables.
98 *
99 * @param cause the cause (which is saved for later retrieval by the
100 * {@link #getCause()} method). (A {@code null} value is
101 * permitted, and indicates that the cause is nonexistent or
102 * unknown.)
103 * @since 1.4
104 */
105 public Error(Throwable cause) {
106 super(cause);
107 }
108
109 /**
110 * Constructs a new error with the specified detail message,
111 * cause, suppression enabled or disabled, and writable stack
112 * trace enabled or disabled.
113 *
114 * @param message the detail message.
115 * @param cause the cause. (A {@code null} value is permitted,
116 * and indicates that the cause is nonexistent or unknown.)
117 * @param enableSuppression whether or not suppression is enabled
118 * or disabled
119 * @param writableStackTrace whether or not the stack trace should
120 * be writable
121 *
122 * @since 1.7
123 */
124 protected Error(String message, Throwable cause,
125 boolean enableSuppression,
126 boolean writableStackTrace) {
127 super(message, cause, enableSuppression, writableStackTrace);
128 }
129 }