Parking Lot-Set

package com.company;


import java.io.IOException;


import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.*;

public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String line = scanner.nextLine();
        HashSet<String> parkingLot = new HashSet<>();

        while (!line.equals("END")) {
            String[] parts = line.split(", ");

            if (parts[0].equals("IN")) {
                parkingLot.add(parts[1]);
            } else {
                parkingLot.remove(parts[1]);
            }

            line = scanner.nextLine();
        }

        if (parkingLot.isEmpty()) {
            System.out.println("Parking Lot is Empty");
        } else {
            for (String carNumber : parkingLot) {
                System.out.println(carNumber);

            }
        }
    }
}