Start a thread from a servlet

[gheeta]

Hi ppl,
I tried lot of methods to run my thread continuously but it affects performance of my application
i want to start the thread wen application starts and want to end it wen appl ends. it can be done in servlets.im new to it.can anyone help me with it

THANKS IN ADVANCE

[rozner]

I want to start the thread when application starts and want to end it when application ends

public static void main(String[] args) {
        Thread t = new Thread(new Runnable() {

            public void run() {
                for (;;) {
                    System.out.println("Hello");
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }

        });
        t.setDaemon(true); // this makes the Thread die when your application exits!
        t.start();
}

Try change the daemon value to false, you'll see the difference.

You can start the thread from any Java class (this means Servlets too).

Some related info...
http://www.google.com/search?q=java+thread+examples
http://java.sun.com/j2se/1.4.2/docs/...ng/Thread.html

[hooknc]

As an on the side note...

To start a thread or any type of work that needs to start at the beginning of a web server... It would be better to use a ServletContextListener instead of a Servlet. The servlet should work, but listening to events from the ServletContext would be better.