Package jakarta.servlet

Interface ServletContextAttributeListener

All Superinterfaces:

EventListener

public interface ServletContextAttributeListener
extends EventListener

Implementations of this interface receive notifications of changes to the attribute list on the servlet context of a web application. To receive notification events, the implementation class must be configured in the deployment descriptor for the web application.

Since:

Servlet 2.3

See Also:

• ServletContextAttributeEvent

Method Summary

Modifier and Type	Method	Description
default void	attributeAdded(ServletContextAttributeEvent scae)	Notification that a new attribute was added to the servlet context.
default void	attributeRemoved(ServletContextAttributeEvent scae)	Notification that an existing attribute has been removed from the servlet context.
default void	attributeReplaced(ServletContextAttributeEvent scae)	Notification that an attribute on the servlet context has been replaced.

Method Details

attributeAdded

default void attributeAdded(ServletContextAttributeEvent scae)

Notification that a new attribute was added to the servlet context. Called after the attribute is added. The default implementation is a NO-OP.

Parameters:

scae - Information about the new attribute

attributeRemoved

default void attributeRemoved(ServletContextAttributeEvent scae)

Notification that an existing attribute has been removed from the servlet context. Called after the attribute is removed. The default implementation is a NO-OP.

Parameters:

scae - Information about the removed attribute

attributeReplaced

default void attributeReplaced(ServletContextAttributeEvent scae)

Notification that an attribute on the servlet context has been replaced. Called after the attribute is replaced. The default implementation is a NO-OP.

Parameters:

scae - Information about the replaced attribute