While (true) behavior in application server

Question

How do I achieve a while (true) like behavior with an application server?
If I need to change my persistent data every few seconds, and with each cycle, procedures A,B,C should be called:

public class Runner
{    
    List values;

    public void repeat() 
    {
        while (true)
        {
            changeSomeDataA();
            changeSomeDataB();
            changeSomeDataC();
        }
    }
}

Answer 1

Use @Schedule annotation for timer service of EJB. like

  @Schedule(second="*/3", minute="*", hour="*")
  public void automaticChangeOnTimer() {
        changeSomeDataA();
        changeSomeDataB();
        changeSomeDataC();
        logger.info("Automatic called the method");
  }

For details look at following link:

http://docs.oracle.com/javaee/6/tutorial/doc/bnboy.html