O5. SoftUni Parking / Maps, Lambda and Stream API - Exercise

package MapsLambdaStreamAPI.Exercise;

import java.util.*;

public class O5SoftUniParking {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int x = Integer.parseInt(scanner.nextLine());
        Map<String, String> people = new LinkedHashMap<>();

        for (int i = 0; i < x; i++) {
            List<String> type = Arrays.asList(scanner.nextLine().split(" "));
            String name = type.get(1);
            switch (type.get(0)) {
                case "register":
                    String numberPlate = type.get(2);
                    if (people.containsKey(name)) {
                        System.out.printf("ERROR: already registered with plate number %s%n", numberPlate);
                    }else{
                        people.put(name, numberPlate);
                        System.out.printf("%s registered %s successfully%n", name, numberPlate);
                    }
                    break;
                case "unregister":
                    if (people.containsKey(name)) {
                        System.out.printf("%s unregistered successfully%n", name);
                        people.remove(name);
                    } else {
                        System.out.printf("ERROR: user %s not found%n", name);
                    }
                    break;
            }
        }
        people.forEach((key, value) -> System.out.println(key + " => " + value));
    }
}