Product Shop /nested Map in Map/

import java.util.*;
import java.util.stream.Collectors;

public class temp_Advanced {
    public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);

        String input = scanner.nextLine();

        Map<String, Map<String, Double>> shops = new TreeMap<>();

        while (!input.equals("Revision")) {
            String[] tokens = input.split(", ");
            String shopName = tokens[0];
            String product = tokens[1];
            double price = Double.parseDouble(tokens[2]);

            Map<String, Double> priceList = shops.get(shopName);
            if (!shops.containsKey(shopName)) {
                priceList = new LinkedHashMap<>();
                priceList.put(product, price);
                shops.put(shopName, priceList);
            } else {
                shops.get(shopName).put(product, price);
            }

            input = scanner.nextLine();
        }

        for (Map.Entry<String, Map<String, Double>> entry : shops.entrySet()) {
            System.out.println(entry.getKey() + "->");
            for (Map.Entry<String, Double> a : entry.getValue().entrySet()) {
                System.out.printf("Product: %s, Price: %.1f%n", a.getKey(), a.getValue());
            }

        }


    }
}