javax.servlet.ServletContextListener Maven / Gradle / Ivy
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package javax.servlet;
import java.util.EventListener;
/**
* Interface for receiving notification events about ServletContext
* lifecycle changes.
*
* In order to receive these notification events, the implementation
* class must be either declared in the deployment descriptor of the web
* application, annotated with {@link javax.servlet.annotation.WebListener},
* or registered via one of the addListener methods defined on
* {@link ServletContext}.
*
*
Implementations of this interface are invoked at their
* {@link #contextInitialized} method in the order in which they have been
* declared, and at their {@link #contextDestroyed} method in reverse
* order.
*
* @see ServletContextEvent
*
* @since Servlet 2.3
*/
public interface ServletContextListener extends EventListener {
/**
* Receives notification that the web application initialization
* process is starting.
*
*
All ServletContextListeners are notified of context
* initialization before any filters or servlets in the web
* application are initialized.
*
* @param sce the ServletContextEvent containing the ServletContext
* that is being initialized
*/
public void contextInitialized(ServletContextEvent sce);
/**
* Receives notification that the ServletContext is about to be
* shut down.
*
*
All servlets and filters will have been destroyed before any
* ServletContextListeners are notified of context
* destruction.
*
* @param sce the ServletContextEvent containing the ServletContext
* that is being destroyed
*/
public void contextDestroyed(ServletContextEvent sce);
}