1/*
2 * Copyright (c) 1994, 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
26package java.lang;
27
28/**
29 * The class {@code Exception} and its subclasses are a form of
30 * {@code Throwable} that indicates conditions that a reasonable
31 * application might want to catch.
32 *
33 * <p>The class {@code Exception} and any subclasses that are not also
34 * subclasses of {@link RuntimeException} are <em>checked
35 * exceptions</em>.  Checked exceptions need to be declared in a
36 * method or constructor's {@code throws} clause if they can be thrown
37 * by the execution of the method or constructor and propagate outside
38 * the method or constructor boundary.
39 *
40 * @author  Frank Yellin
41 * @see     java.lang.Error
42 * @jls 11.2 Compile-Time Checking of Exceptions
43 * @since   1.0
44 */
45public class Exception extends Throwable {
46    static final long serialVersionUID = -3387516993124229948L;
47
48    /**
49     * Constructs a new exception with {@code null} 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 Exception() {
54        super();
55    }
56
57    /**
58     * Constructs a new exception 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 Exception(String message) {
66        super(message);
67    }
68
69    /**
70     * Constructs a new exception with the specified detail message and
71     * cause.  <p>Note that the detail message associated with
72     * {@code cause} is <i>not</i> automatically incorporated in
73     * this exception'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 {@code null} value is
79     *         permitted, and indicates that the cause is nonexistent or
80     *         unknown.)
81     * @since  1.4
82     */
83    public Exception(String message, Throwable cause) {
84        super(message, cause);
85    }
86
87    /**
88     * Constructs a new exception with the specified cause and a detail
89     * message of {@code (cause==null ? null : cause.toString())} (which
90     * typically contains the class and detail message of {@code cause}).
91     * This constructor is useful for exceptions that are little more than
92     * wrappers for other throwables (for example, {@link
93     * java.security.PrivilegedActionException}).
94     *
95     * @param  cause the cause (which is saved for later retrieval by the
96     *         {@link #getCause()} method).  (A {@code null} value is
97     *         permitted, and indicates that the cause is nonexistent or
98     *         unknown.)
99     * @since  1.4
100     */
101    public Exception(Throwable cause) {
102        super(cause);
103    }
104
105    /**
106     * Constructs a new exception with the specified detail message,
107     * cause, suppression enabled or disabled, and writable stack
108     * trace enabled or disabled.
109     *
110     * @param  message the detail message.
111     * @param cause the cause.  (A {@code null} value is permitted,
112     * and indicates that the cause is nonexistent or unknown.)
113     * @param enableSuppression whether or not suppression is enabled
114     *                          or disabled
115     * @param writableStackTrace whether or not the stack trace should
116     *                           be writable
117     * @since 1.7
118     */
119    protected Exception(String message, Throwable cause,
120                        boolean enableSuppression,
121                        boolean writableStackTrace) {
122        super(message, cause, enableSuppression, writableStackTrace);
123    }
124}
125