Listing 1. This listener class listens to the lifecycle events of the ServletContext.

mport javax.servlet.ServletContextListener;
import javax.servlet.ServletContextEvent;

public class MyApplicationListener 
   implements ServletContextListener {

   public void contextInitialized(
      ServletContextEvent cse) {
      System.out.println(
         "Application initialized");
   }

   public void contextDestroyed(
      ServletContextEvent cse) {
      System.out.println("Application shut down");
   }
}