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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
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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
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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   1.0
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      */
RuntimeException()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      */
RuntimeException(String message)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      */
RuntimeException(String message, Throwable cause)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      */
RuntimeException(Throwable cause)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      */
RuntimeException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace)114     protected RuntimeException(String message, Throwable cause,
115                                boolean enableSuppression,
116                                boolean writableStackTrace) {
117         super(message, cause, enableSuppression, writableStackTrace);
118     }
119 }
120