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## java.util
Class TooManyListenersException

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

All Implemented Interfaces:
  Serializable

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 "void addXyzEventListener" 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.

Since:
  JDK1.1
See Also:
  `EventObject`, `EventListener`, Serialized Form

Constructor Summary
`TooManyListenersException()` Constructs a TooManyListenersException with no detail message.
`TooManyListenersException(String s)` Constructs a TooManyListenersException with the specified detail message.

Methods inherited from class java.lang.Throwable
`fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### 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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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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