Observable (The Adobe AEM Quickstart and Web Application. 6.6.0)

All Known Implementing Classes:

ChangeDispatcher, CompositeNodeStore, MemoryNodeStore
```
public interface Observable
```
An Observable supports attaching Observer instances for listening to content changes.

See Also:

Observable

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  java.io.Closeable addObserver(Observer observer)
  Register a new Observer.

- Method Detail
  - addObserver
```
java.io.Closeable addObserver(Observer observer)
```
    Register a new Observer. Clients need to call Closeable.close() to stop getting notifications on the registered observer and to free up any resources associated with the registration.
    
    Returns:
    
    a Closeable instance.