Thread.sleep in servlet?

[Azrael Noor]

To keep track of application i have used multithreading in servlet as need was to run program on deploying, so contextlistener is used there. Some unexpected behaviors are facing in jboss 4.0

while (true) {
            if(counter==20)
            {
                counter=5;
            }
            ApplicationStatusCheck Listener = null;
            Calendar now = null;

            Listener = new ApplicationStatusCheck();
            now=Calendar.getInstance();
            
            if (Listener == null) {
                System.out.println("Container Stopped at " + (now.get(Calendar.MONTH) + 1) + "-"
                        + now.get(Calendar.DATE) + "-" + now.get(Calendar.YEAR) + "-" + (now.get(Calendar.HOUR)) + ":" + now.get(Calendar.MINUTE) + ":"
                        + now.get(Calendar.SECOND) + ":" + now.get(Calendar.MILLISECOND));
            }


            Listener.setAck("Container is working"+counter);
            Ack = Listener.getAck();
            if (Ack.equals("Abnormal"))
            {
                System.out.println("Clients are not Working.");
            } 
            else if (Ack.equals("Container is working"+counter))
            {
                {
                    System.out.println("Acknowledge: " + Ack);
                    System.out.println(
                            "Recieved at " + (now.get(Calendar.MONTH) + 1) + "-"
                            + now.get(Calendar.DATE) + "-" + now.get(Calendar.YEAR) + "-" + (now.get(Calendar.HOUR)) + ":" + now.get(Calendar.MINUTE) + ":"
                            + now.get(Calendar.SECOND) + ":" + now.get(Calendar.MILLISECOND))+" :Working Fine";

                    counter+=counter++;
                    try
                    {
                        Thread.sleep(10000);
                    } 
                    catch (InterruptedException ex)
                    {
                        ex.printStackTrace();
                    }
                }

            }

1) when thread run, it does not stop even server stopped or net beans is close.
2) during application startup servlet run, thread working fine. but when changes done to some class and redeploy is done it does not allow to deploy again.
3) Thread is very bad

Please solve the problem.
Thank you

[Paul Sturrock]

What are you trying to achieve with this? Thread.sleep is a very questionable thing to want to be doing in a Servlet.

[Shanky Sohar]

Why you are writing code in servlets,BecauseAs per MVC,
Writing code within a servlet is not a good practice,you must have to use the servlet as controller only