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package java.util;

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.

Author:Laurence P. G. Cable
See Also:
Since: JDK1.1
/** * <p> * The <code> TooManyListenersException </code> Exception is used as part of * the Java Event model to annotate and implement a unicast special case of * a multicast Event Source. * </p> * <p> * 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. * </p> * * @see java.util.EventObject * @see java.util.EventListener * * @author Laurence P. G. Cable * @since JDK1.1 */
public class TooManyListenersException extends Exception { private static final long serialVersionUID = 5074640544770687831L;
Constructs a TooManyListenersException with no detail message. A detail message is a String that describes this particular exception.
/** * Constructs a TooManyListenersException with no detail message. * A detail message is a String that describes this particular exception. */
public TooManyListenersException() { super(); }
Constructs a TooManyListenersException with the specified detail message. A detail message is a String that describes this particular exception.
Params:
  • s – the detail message
/** * Constructs a TooManyListenersException with the specified detail message. * A detail message is a String that describes this particular exception. * @param s the detail message */
public TooManyListenersException(String s) { super(s); } }