All Known Subinterfaces:

ICacheMonitor, IContainer<E>, IContainer.Modifiable<E>, IContainer.Persistable<E>, IContainerBlockingQueue<E>, IContainerCollection<E>, IContainerList<E>, IContainerMap<K,V>, IContainerQueue<E>, IContainerSet<E>, IContainerSortedSet<E>, IHistory<T>, ILifecycle, IManagedContainer, INotifier.INotifier2, IOptions, IPluginContainer, IRegistry<K,V>, OMPreferences

All Known Implementing Classes:

AbstractDelegator, Cache, CacheMonitor, ChallengeNegotiator, ChallengeResponseNegotiator, Container, ContainerBlockingQueue, ContainerCollection, ContainerList, ContainerMap, ContainerQueue, ContainerSet, ContainerSortedSet, DelegableReentrantLock, DelegatingRegistry, ElementWizard, ExecutorServiceNotifier, ExecutorServiceNotifier.ThreadPool, ExecutorWorkSerializer, FileUserManager, FiniteStateMachine, HashMapDelegatingRegistry, HashMapRegistry, HashMapRegistry.AutoCommit, History, Lifecycle, LifecycleHook, ManagedContainer, Negotiator, Notifier, NotifyingMonitor, PreferenceHistory, PriorityQueueRunner, QueueRunner, QueueRunner2, QueueWorker, QueueWorkerWorkSerializer, Randomizer, ReferenceMonitor, ReferenceQueueWorker, Registry, ResponseNegotiator, RollingLog, RWLockManager, RWOLockManager, SashComposite, SerializingExecutor, SetContainer, ShareableLifecycle, TimerLifecycle, UIQueueRunner, UnmodifiableRegistry, UserManager, UserManagerAuthenticator, ValueNotifier, Worker
```
public interface INotifier
```
An entity that a number of listeners can be registered with and that can fire events to these registered listeners.
Implementors are encouraged to document the event types that they are able to fire and that their listeners may want to receive and handle.
Implementors may want to extend Notifier instead of implementing this interface directly.

Author:

Eike Stepper

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface INotifier.INotifier2

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addListener(IListener listener)`	Adds a listener to this notifier.
`IListener[]`	`getListeners()`	Returns the listeners that are registered with this notifier.
`boolean`	`hasListeners()`	Returns `true` if one or more listeners are registered with this notifier, `false` otherwise.
`void`	`removeListener(IListener listener)`	Removes a listener from this notifier.

- Method Detail
  - addListener
```
void addListener(IListener listener)
```
    Adds a listener to this notifier.
    Depending on the implementation duplicate listeners may lead to duplicate event delivery or not. Implementors are encouraged to prevent events from being delivered more than once to the same listener,
  - removeListener
```
void removeListener(IListener listener)
```
    Removes a listener from this notifier.
  - hasListeners
```
boolean hasListeners()
```
    Returns true if one or more listeners are registered with this notifier, false otherwise.
    
    Since:
    
    3.0
  - getListeners
```
IListener[] getListeners()
```
    Returns the listeners that are registered with this notifier.
    Depending on the implementation duplicate listeners may be contained in the returned array.
    
    Since:
    
    3.0

Interface INotifier

Nested Class Summary

Method Summary

Method Detail

addListener

removeListener

hasListeners

getListeners