import com.hft.collections.HFTMap; public class HFTTradingSystem { public static void main(String[] args) { HFTMap<String, Double> symbolPrices = new HFTMap<>(); symbolPrices.put("AAPL", 150.0); symbolPrices.put("GOOGL", 2000.0); double price = symbolPrices.get("AAPL"); } }