Tomcat failed to start when calling Thread.sleep inside servlet on server startup [duplicate]

This question already has answers here: How to run a background task in a servlet based web application? (5 answers) Closed 7 years ago.

Tomcat failed to start when calling Thread.sleep inside servlet on server startup.

There is a Servet which is loaded at server start up. Inside the init method of servlet, sendMail method of MailSenderUtility class is called. Inside the sendMail method I have called Thread.sleep() method to sleep the program for a calculated time if it is not 8 PM.

Due to开发者_如何学编程 this code (Thread.sleep) server does not getting started. If I delete the Thread.sleep statement, it is working fine.

Please help and let me know if there is better way to do it. For your knowledge I can not use Quartz and Java Timer class for my scheduler due to some limitations.

Thank to you all for support.

Dheeraj

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Dheeraj you cant "stop" the thread responsible for the initialization. Do it somewhere else since Servlet object is not suitable for this.

What you need is ContextListener. Well described also here.

Good luck!

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Obviously you are putting the main thread to sleep.

Instead you should create a separate thread and run MailSenderUtility on it. Then you can sleep this thread without affecting the main initialization thread.

A simple example:

    new Thread(new Runnable(){
        public void run() {
            // start MailSenderUtility here
        }
    }).start();