ServletContextAttributeListener

ServletContextAttributeListener receives notifications about ServletContext attribute changes.

There are 3 ways to add ServletContextListener to the Application.

1.Using Deployment Descriptor

2.Using WebListener Annotation

3.Using addListener method of ServletContext.

public interface ServletContextAttributeListener extends EventListener {
 public void attributeAdded(ServletContextAttributeEvent event);
 public void attributeRemoved(ServletContextAttributeEvent event);
 public void attributeReplaced(ServletContextAttributeEvent arg0);
}

ServletContextAttributeListener gets notification, whenever an attribute has been added, removed and replaced from the ServletContext.

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