title: How do you efficiently repeat an action every x minutes?
body: <p>I have an application that runs in JBoss.  I have an incoming web service request that will update an <code>ArrayList</code>. I want to poll this list from another class every 60 seconds.  What would be the most efficient way of doing this? </p>
  
  <p>Could anyone point me to a good example? </p>