What I want is to start a thread every time the tomcat server starts.For this I need to catch the event of shutting down of tomcat.How can I do this?I tried to do it using sessions but sometimes the session even persists after shutting down and restating tomcat?what are my options?
1 Answer
You can try to catch an JVM shutdown event in this way:
Runtime.getRuntime().addShutdownHook(new Thread() { public void run() { System.out.println("BYE BYE"); } }); The other option is to implement ServletContextListener by using @WebListener Annotation. No xml configuration is required in this case.
@WebListener public class MyLifeCycleListener implements ServletContextListener { public void contextInitialized(ServletContextEvent event) { //TODO ON START } public void contextDestroyed(ServletContextEvent event) { //TODO ON DESTROY } } 
ServletContextListener.