Orders

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;

public class Orders {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        Map<String, Double> map = new LinkedHashMap<>();
        Map<String, Integer> testQuantity = new LinkedHashMap<>();

        String input = scanner.nextLine();

        while (!input.equals("buy")) {
            String[] tokens = input.split(" ");

            String productName = tokens[0];
            double price = Double.parseDouble(tokens[1]);
            int quantity = Integer.parseInt(tokens[2]);
            double sum = price * quantity;

            if (!map.containsKey(productName)) {
                map.put(productName, sum);
                testQuantity.put(productName, quantity);
            } else {
                testQuantity.put(productName, testQuantity.get(productName) + quantity);
                map.put(productName, testQuantity.get(productName) * price);
            }

            input = scanner.nextLine();
        }

        map.forEach((key, value) -> System.out.printf("%s -> %.2f%n", key, value));
    }
}