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
26package 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   1.0
42 */
43public 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 {@code null} 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 {@code (cause==null ? null : cause.toString())}
85     * (which typically contains the class and detail message of
86     * {@code cause}).  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 {@code null} 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}
120