// Create the url stat objects:
this.stats = new Vector(urls.size()) ;
for (int i = 0 ; i < urls.size() ; i++)
stats.addElement(new URLStat((URL) urls.elementAt(i))) ;
// Create an event manager, and register for event at end of duration
this.manager = new EventManager();
this.manager.setDaemon(true) ;
this.manager.start() ;
this.manager.registerTimer(duration, this, null) ;
}