public class FileServer
{
    public static void main(String[] args) throws Exception
    {
        Server server = new Server();
        SelectChannelConnector connector = new SelectChannelConnector();
        connector.setPort(8080);
        server.addConnector(connector);
 
        ResourceHandler resource_handler = new ResourceHandler();
        resource_handler.setDirectoriesListed(true);
        resource_handler.setWelcomeFiles(new String[]{ "index.html" });
 
        resource_handler.setResourceBase(".");
 
        HandlerList handlers = new HandlerList();
        handlers.setHandlers(new Handler[] { resource_handler, new DefaultHandler() });
        server.setHandler(handlers);
 
        server.start();
        server.join();
    }
}

<Set name="welcomeFiles">
   <Array type="String"><Item>index.html</Item></Array>
</Set>
...