本文属于机器翻译版本。若本译文内容与英语原文存在差异，则一律以英文原文为准。
（可选）扩展消费端
教程：使用 KPL 和 KCL 1.x 处理实时股票数据 中的应用程序可能已足以达到您的目的。此可选部分演示如何针对更为复杂的场景扩展消费端代码。
如果要了解每分钟的最大销售订单数，可以修改三个位置的 StockStats 类以适应此新的优先级。
扩展消费端
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添加新实例变量：
// Ticker symbol of the stock that had the largest quantity of shares sold private String largestSellOrderStock; // Quantity of shares for the largest sell order trade private long largestSellOrderQuantity; -
将以下代码添加到
addStockTrade：if (type == TradeType.SELL) { if (largestSellOrderStock == null || trade.getQuantity() > largestSellOrderQuantity) { largestSellOrderStock = trade.getTickerSymbol(); largestSellOrderQuantity = trade.getQuantity(); } } -
修改
toString方法以打印其他信息：public String toString() { return String.format( "Most popular stock being bought: %s, %d buys.%n" + "Most popular stock being sold: %s, %d sells.%n" + "Largest sell order: %d shares of %s.", getMostPopularStock(TradeType.BUY), getMostPopularStockCount(TradeType.BUY), getMostPopularStock(TradeType.SELL), getMostPopularStockCount(TradeType.SELL), largestSellOrderQuantity, largestSellOrderStock); }
如果您现在运行消费端（请记住同时运行创建器），则应看到类似于以下内容的输出：
****** Shard shardId-000000000001 stats for last 1 minute ****** Most popular stock being bought: WMT, 27 buys. Most popular stock being sold: PTR, 14 sells. Largest sell order: 996 shares of BUD. ****************************************************************
后续步骤
