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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  
26  package 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   JDK1.0
44   */
45  public 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 <tt>null</tt> 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 <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 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 <tt>null</tt> 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 }