gistfile1.pde

public class AsyncServlet implements AtmosphereHandler<HttpServletRequest, HttpServletResponse> {
   
   @Override
   public void onRequest(AtmosphereResource<HttpServletRequest,HttpServletResponse> resource)
    throws ServletException, IOException {

        try {
            System.out.println("Starting onRequest");
            resource.suspend();
            // Will be executed using a ScheduledThreadPool (can also use scheduleBroadcast)
            resource.delayBroadcast("Something",10, TimeUnit.SECONDS);
        } finally { 
        }
    }
    
    @Override
    public void onStateChange(AtmosphereResourceEvent<HttpServletRequest,HttpServletResponse> event) {
        if (!event.isResuming() && !event.isCancelled()) {
             event.resume();
        }
    }
}