Watcher (ZooKeeper 3.5.1-alpha API)

```
public interface Watcher
```
This interface specifies the public interface an event handler class must implement. A ZooKeeper client will get various events from the ZooKeeper server it connects to. An application using such a client handles these events by registering a callback object with the client. The callback object is expected to be an instance of a class that implements Watcher interface.

Nested Classes
Modifier and Type	Interface and Description
`static interface`	`Watcher.Event` This interface defines the possible states an Event may represent
`static class`	`Watcher.WatcherType` Enumeration of types of watchers

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`process(WatchedEvent event)`

Interface Watcher