EventListener (Box Java SDK)

```
public interface EventListener
```
The listener interface for receiving events from an EventStream.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`onEvent(BoxEvent event)` Invoked when an event is received from the API.
`boolean`	`onException(Throwable e)` Invoked when an error occurs while waiting for events to be received.
`void`	`onNextPosition(long position)` Invoked when an updated stream position is received from the API.

- Method Detail
  - onEvent
```
void onEvent(BoxEvent event)
```
    Invoked when an event is received from the API.
    
    Parameters:
    
    event - the received event.
  - onNextPosition
```
void onNextPosition(long position)
```
    Invoked when an updated stream position is received from the API.
    
    Parameters:
    
    position - of the stream.
  - onException
```
boolean onException(Throwable e)
```
    Invoked when an error occurs while waiting for events to be received.
    When an EventStream encounters an exception, it will invoke this method on each of its listeners until one of them returns true, indicating that the exception was handled.
    
    Parameters:
    
    e - the exception that was thrown while waiting for events.
    
    Returns:
    
    true if the exception was handled; otherwise false.