if (localFeed == null) {
localFeed = new RssFeed(remoteFeed.getTitle(), remoteFeed.getLink(), remoteFeed.getDescription());
localFeed.setVersion(RssVersion.RSS_2_0);
}
// merge remote feed with local one
localFeed.merge(remoteFeed);
// add a new item to feed
localFeed.addItem(new RssItem("New Google Item", "This is a new item", "http://www.google.com"));
// publish updated feed
localFeed.save(feedFile);
// print item titles