PhaseListener (Jakarta EE Platform API)

All Superinterfaces:

EventListener, Serializable
```
public interface PhaseListener
extends EventListener, Serializable
```
An interface implemented by objects that wish to be notified at the beginning and ending of processing for each standard phase of the request processing lifecycle.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`afterPhase(PhaseEvent event)`	Handle a notification that the processing for a particular phase has just been completed.
`default void`	`beforePhase(PhaseEvent event)`	Handle a notification that the processing for a particular phase of the request processing lifecycle is about to begin.
`PhaseId`	`getPhaseId()`	Return the identifier of the request processing phase during which this listener is interested in processing `PhaseEvent` events.

- Method Detail
  - afterPhase
```
default void afterPhase(PhaseEvent event)
```
    Handle a notification that the processing for a particular phase has just been completed.
    
    Parameters:
    
    event - the phase event.
  - beforePhase
```
default void beforePhase(PhaseEvent event)
```
    Handle a notification that the processing for a particular phase of the request processing lifecycle is about to begin.
    
    Parameters:
    
    event - the phase event.
  - getPhaseId
```
PhaseId getPhaseId()
```
    Return the identifier of the request processing phase during which this listener is interested in processing PhaseEvent events. Legal values are the singleton instances defined by the PhaseId class, including PhaseId.ANY_PHASE to indicate an interest in being notified for all standard phases.
    
    Returns:
    
    the phase id.