Maps, Lambda and Stream API - Exercise - Legendary Farming

    package com.company;

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

    public class Main {

        public static void main(String[] args) {

            Scanner scanner =  new Scanner(System.in);

            Map<String, Integer> materials = new LinkedHashMap<>();
            Map<String, Integer> junks = new LinkedHashMap<>();

            materials.put("shards", 0);
            materials.put("fragments", 0);
            materials.put("motes", 0);

            String winner = "";
            boolean flag = false;

            do {

                String[] data = scanner.nextLine().split("\\s+");

                for (int i = 0; i < data.length; i += 2) {

                    int quantity = Integer.parseInt(data[i]);
                    String material = data[i + 1].toLowerCase();

                    if (!materials.containsKey(material)) {
                        if (!junks.containsKey(material)) {
                            junks.put(material, quantity);
                        } else {
                            junks.put(material, junks.get(material) + quantity);
                        }
                    } else {
                        materials.put(material, materials.get(material) + quantity);
                        if (materials.get(material) >= 250) {
                            materials.put(material, materials.get(material) - 250);
                            winner = material;
                            flag = true;
                            break;
                        }
                    }


                }

            } while (!flag);

            if (winner.equals("shards")){
                System.out.println("Shadowmourne obtained!");
            }else if (winner.equals("motes")){
                System.out.println("Dragonwrath obtained!");
            }else if (winner.equals("fragments")){
                System.out.println("Valanyr obtained!");
            }

            materials.entrySet()
                    .stream()
                    .sorted((a,b) ->{
                        int sort = Integer.compare(b.getValue(), a.getValue());
                        if (sort == 0){
                            sort = a.getKey().compareTo(b.getKey());
                        }
                        return sort;
                    }).forEach(e -> {
                System.out.println(String.format("%s: %d",e.getKey(),e.getValue()));
            });

            junks.entrySet().stream()
                    .sorted((a,b) -> a.getKey().compareTo(b.getKey()))
                    .forEach(e -> {
                        System.out.println(String.format("%s: %d",e.getKey(),e.getValue()));
                    });
        }
    }