V-Logger

package ExamJavaAdvanced22Oct2017;

import java.util.*;

public class VLogger {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        Map<String, followersFollowing> statistics = new HashMap<>();
        while (true) {
            String[] input = scan.nextLine().split(" ");
            if (input[0].equalsIgnoreCase("statistics")) {
                break;
            }
            if (input.length == 3) {
                if (statistics.containsKey(input[0]) && statistics.containsKey(input[2])) {
                    if (!input[0].equals(input[2])) {
                        statistics.get(input[0]).getFollowing().add(input[2]);
                        statistics.get(input[2]).getFollowers().add(input[0]);
                    }
                }
            }
            if (input.length == 4) {
                if (!statistics.containsKey(input[0])) {
                    statistics.put(input[0], new followersFollowing());
                    statistics.get(input[0]).setFollowers(new HashSet<>());
                    statistics.get(input[0]).setFollowing(new HashSet<>());
                } else {
                    continue;
                }
            }
        }
        System.out.println("The V-Logger has a total of " + statistics.size() + " vloggers in its logs.");
        final int[] counter = {1};
        statistics.entrySet()
                .stream()
                .sorted((y1, y2) -> Integer.valueOf(y1.getValue().getFollowing().size()).compareTo(Integer.valueOf(y2.getValue().getFollowing().size())))
                .sorted((x1, x2) -> Integer.valueOf(x2.getValue().getFollowers().size()).compareTo(Integer.valueOf(x1.getValue().getFollowers().size())))
                .forEach(x -> {
                            if (counter[0] == 1) {
                                System.out.println(counter[0] + ". " + x.getKey() + " : " + x.getValue().getFollowers().size() + " followers, " + x.getValue().getFollowing().size() + " following");
                                x.getValue()
                                        .getFollowers()
                                        .stream()
                                        .sorted()
                                        .forEach(f -> System.out.println("*  " + f));
                            } else {
                                System.out.println(counter[0] + ". " + x.getKey() + " : " + x.getValue().getFollowers().size() + " followers, " + x.getValue().getFollowing().size() + " following");
                            }
                            counter[0]++;
                        }
                );
    }

    static class followersFollowing {
        public HashSet<String> followers;
        public HashSet<String> following;

        public HashSet<String> getFollowers() {
            return followers;
        }

        public void setFollowers(HashSet<String> followers) {
            this.followers = followers;
        }

        public HashSet<String> getFollowing() {
            return following;
        }

        public void setFollowing(HashSet<String> following) {
            this.following = following;
        }

        public followersFollowing(HashSet<String> followers, HashSet<String> following) {

            this.followers = followers;
            this.following = following;
        }

        public followersFollowing() {
        }
    }
}