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24  */
25 
26 package 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 
50 public 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 
TooManyListenersException()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 
TooManyListenersException(String s)68     public TooManyListenersException(String s) {
69         super(s);
70     }
71 }
72