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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   * {@code RuntimeException} is the superclass of those
30   * exceptions that can be thrown during the normal operation of the
31   * Java Virtual Machine.
32   *
33   * <p>{@code RuntimeException} and its subclasses are <em>unchecked
34   * exceptions</em>.  Unchecked exceptions do <em>not</em> need to be
35   * declared in a method or constructor's {@code throws} clause if they
36   * can be thrown by the execution of the method or constructor and
37   * propagate outside the method or constructor boundary.
38   *
39   * @author  Frank Yellin
40   * @jls 11.2 Compile-Time Checking of Exceptions
41   * @since   JDK1.0
42   */
43  public class RuntimeException extends Exception {
44      static final long serialVersionUID = -7034897190745766939L;
45  
46      /** Constructs a new runtime exception with {@code null} as its
47       * detail message.  The cause is not initialized, and may subsequently be
48       * initialized by a call to {@link #initCause}.
49       */
50      public RuntimeException() {
51          super();
52      }
53  
54      /** Constructs a new runtime exception with the specified detail message.
55       * The cause is not initialized, and may subsequently be initialized by a
56       * call to {@link #initCause}.
57       *
58       * @param   message   the detail message. The detail message is saved for
59       *          later retrieval by the {@link #getMessage()} method.
60       */
61      public RuntimeException(String message) {
62          super(message);
63      }
64  
65      /**
66       * Constructs a new runtime exception with the specified detail message and
67       * cause.  <p>Note that the detail message associated with
68       * {@code cause} is <i>not</i> automatically incorporated in
69       * this runtime exception's detail message.
70       *
71       * @param  message the detail message (which is saved for later retrieval
72       *         by the {@link #getMessage()} method).
73       * @param  cause the cause (which is saved for later retrieval by the
74       *         {@link #getCause()} method).  (A <tt>null</tt> value is
75       *         permitted, and indicates that the cause is nonexistent or
76       *         unknown.)
77       * @since  1.4
78       */
79      public RuntimeException(String message, Throwable cause) {
80          super(message, cause);
81      }
82  
83      /** Constructs a new runtime exception with the specified cause and a
84       * detail message of <tt>(cause==null ? null : cause.toString())</tt>
85       * (which typically contains the class and detail message of
86       * <tt>cause</tt>).  This constructor is useful for runtime exceptions
87       * that are little more than wrappers for other throwables.
88       *
89       * @param  cause the cause (which is saved for later retrieval by the
90       *         {@link #getCause()} method).  (A <tt>null</tt> value is
91       *         permitted, and indicates that the cause is nonexistent or
92       *         unknown.)
93       * @since  1.4
94       */
95      public RuntimeException(Throwable cause) {
96          super(cause);
97      }
98  
99      /**
100      * Constructs a new runtime exception with the specified detail
101      * message, cause, suppression enabled or disabled, and writable
102      * stack trace enabled or disabled.
103      *
104      * @param  message the detail message.
105      * @param cause the cause.  (A {@code null} value is permitted,
106      * and indicates that the cause is nonexistent or unknown.)
107      * @param enableSuppression whether or not suppression is enabled
108      *                          or disabled
109      * @param writableStackTrace whether or not the stack trace should
110      *                           be writable
111      *
112      * @since 1.7
113      */
114     protected RuntimeException(String message, Throwable cause,
115                                boolean enableSuppression,
116                                boolean writableStackTrace) {
117         super(message, cause, enableSuppression, writableStackTrace);
118     }
119 }