Orders

import java.text.DecimalFormat;
import java.util.*;

public class Orders {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Stock> warehouse = new ArrayList<>();

        String input;
        while (!"buy".equals(input = sc.nextLine())){
            String[] nextStock = input.split("\\s+");
            String name = nextStock[0];
            double price = Double.parseDouble(nextStock[1]);
            int quantity = Integer.parseInt(nextStock[2]);


            if (listContainsProduct(warehouse, name)){
                changeProduct(warehouse, name, price, quantity);
            }
            else {
                warehouse.add(new Stock(name, price, quantity));
            }
        }
        for (Stock o : warehouse){
            System.out.println(o.getName() + " -> " + new DecimalFormat("#.00").format(o.getPrice() * o.getQuantity()));
        }
    }


    static boolean listContainsProduct(List<Stock> stocks, String name){
        for (Stock o : stocks){
            if(o.getName().equals(name))
            return true;
        }
        return false;
    }
    static List<Stock> changeProduct(List<Stock> stocks, String name, double price, int quantity){
        for (Stock o : stocks){
            if (o.getName().equals(name)){
                o.setPrice(price);
                o.setQuantity(o.getQuantity() + quantity);
            }
        }
        return stocks;
    }
}

class Stock {

    private String name;
    private double price;
    private int quantity;

    public Stock(String name, double price, int quantity){
        this.name = name;
        this.price = price;
        this.quantity = quantity;
    }

    public void setPrice(double price){
        this.price = price;
    }
    public void setQuantity(int quantity){
        this.quantity = quantity;
    }

    public String getName() {return this.name;}
    public int getQuantity() {return this.quantity;}
    public double getPrice() {return this.price;}
}