TooManyListenersException.java revision 51b1b6997fd3f980076b8081f7f1165ccc2a4008 
1/*
2 * Copyright (c) 1996, 2008, 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
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24 */
25
26package java.util;
27
28/**
29 * <p>
30 * The <code> TooManyListenersException </code> Exception is used as part of
31 * the Java Event model to annotate and implement a unicast special case of
32 * a multicast Event Source.
33 * </p>
34 * <p>
35 * The presence of a "throws TooManyListenersException" clause on any given
36 * concrete implementation of the normally multicast "void addXyzEventListener"
37 * event listener registration pattern is used to annotate that interface as
38 * implementing a unicast Listener special case, that is, that one and only
39 * one Listener may be registered on the particular event listener source
40 * concurrently.
41 * </p>
42 *
43 * @see java.util.EventObject
44 * @see java.util.EventListener
45 *
46 * @author Laurence P. G. Cable
47 * @since  JDK1.1
48 */
49
50public class TooManyListenersException extends Exception {
51    private static final long serialVersionUID = 5074640544770687831L;
52
53    /**
54     * Constructs a TooManyListenersException with no detail message.
55     * A detail message is a String that describes this particular exception.
56     */
57
58    public TooManyListenersException() {
59        super();
60    }
61
62    /**
63     * Constructs a TooManyListenersException with the specified detail message.
64     * A detail message is a String that describes this particular exception.
65     * @param s the detail message
66     */
67
68    public TooManyListenersException(String s) {
69        super(s);
70    }
71}
72