Events (Public APIs of Glassfish 6.2.3 API)

```
@Contract
public interface Events
```
Contract to register/unregister events listener. This implementation is not meant to be used for performance sensitive message delivery.

Author:

Jerome Dochez

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`register(EventListener listener)`	Registers a new listener for global events
`void`	`send(EventListener.Event event)`	Sends a event asynchronously
`void`	`send(EventListener.Event event, boolean asynchronously)`	Sends a event to all listener synchronously or asynchronously.
`boolean`	`unregister(EventListener listener)`	Unregisteres a listener

- Method Detail
  - register
```
void register(EventListener listener)
```
    Registers a new listener for global events
    
    Parameters:
    
    listener - the new listener
  - unregister
```
boolean unregister(EventListener listener)
```
    Unregisteres a listener
    
    Parameters:
    
    listener - the register to remove
    
    Returns:
    
    true if the removal was successful
  - send
```
void send(EventListener.Event event)
```
    Sends a event asynchronously
    
    Parameters:
    
    event - event to send
  - send
```
void send(EventListener.Event event,
          boolean asynchronously)
```
    Sends a event to all listener synchronously or asynchronously.
    
    Parameters:
    
    event - event to send
    
    asynchronously - true if the event should be sent asynchronously