Class TooManyListenersException

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:

1.1

See Also:

Constructor Summary

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

Method Summary

Methods declared in class Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

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

© 1993, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/util/TooManyListenersException.html