INotifier.INotifier2 (Net4j Utilities Documentation)

All Superinterfaces:

INotifier

All Known Implementing Classes:

AbstractDelegator, Cache, CacheMonitor, ChallengeNegotiator, ChallengeResponseNegotiator, Container, ContainerBlockingQueue, ContainerCollection, ContainerList, ContainerMap, ContainerQueue, ContainerSet, ContainerSortedSet, DelegatingRegistry, ElementWizard, ExecutorServiceNotifier, ExecutorServiceNotifier.ThreadPool, ExecutorWorkSerializer, FileUserManager, FiniteStateMachine, HashMapDelegatingRegistry, HashMapRegistry, HashMapRegistry.AutoCommit, History, Lifecycle, LifecycleHook, ManagedContainer, Negotiator, Notifier, PreferenceHistory, PriorityQueueRunner, QueueRunner, QueueRunner2, QueueWorker, QueueWorkerWorkSerializer, Randomizer, ReferenceMonitor, ReferenceQueueWorker, Registry, ResponseNegotiator, RollingLog, RWLockManager, RWOLockManager, SerializingExecutor, SetContainer, ShareableLifecycle, UIQueueRunner, UserManager, UserManagerAuthenticator, ValueNotifier, Worker

Enclosing interface:

INotifier
```
public static interface INotifier.INotifier2
extends INotifier
```
Since:

3.13

Author:

Eike Stepper

Nested Class Summary
- Nested classes/interfaces inherited from interface org.eclipse.net4j.util.event.INotifier
  INotifier.INotifier2

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`addUniqueListener(IListener listener)`	Adds a listener to this notifier unless this notifier already `contains` the listener.
`boolean`	`hasListener(IListener listener)`	Returns `true` if this notifier contains the listener, `false` otherwise.

Methods inherited from interface org.eclipse.net4j.util.event.INotifier
addListener, getListeners, hasListeners, removeListener

- Method Detail
  - hasListener
```
boolean hasListener(IListener listener)
```
    Returns true if this notifier contains the listener, false otherwise.
  - addUniqueListener
```
boolean addUniqueListener(IListener listener)
```
    Adds a listener to this notifier unless this notifier already contains the listener.