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# Class java.util.TooManyListenersException

    java.lang.Object
       |
       +----java.lang.Throwable
               |
               +----java.lang.Exception
                       |
                       +----java.util.TooManyListenersException

public class TooManyListenersException
extends Exception

The `TooManyListenersException` Exception is used as part of the Java Event model to annotate and implement a unicast special case of a multicast Event Source.

The presence of a `throws TooManyListenersException` clause on any given concrete implementation of the normally multicast semantic <italic> void add < EventListenerType > () </italic> event listener registration pattern is used to annotate that interface as implementing a unicast Listener special case, that is, that one and only one Listener may be registered on the particular event listener source concurrently.

See Also:
  EventObject, EventListener

##

TooManyListenersException()
  Constructs a TooManyListenersException with no detail message.
TooManyListenersException(String)
  Constructs a TooManyListenersException with the specified detail message.

##

TooManyListenersException

     public TooManyListenersException()

  Constructs a TooManyListenersException with no detail message. A detail message is a String that describes this particular exception.

TooManyListenersException

     public TooManyListenersException(String s)

  Constructs a TooManyListenersException with the specified detail message. A detail message is a String that describes this particular exception.

  Parameters:
    s - the detail message

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