What is the good way to replace HashMap and java.util.Map in my code below?

avoid using : import java.util.HashMap;

import java.util.Map;

Someone could have a look?

Please, see below:

/**

* Freedom Parking System

* Keeps track of license plates and associated credit cards used for evening parking.

* The credit card charges are sent to a log file defined as the variable logFile.

* Customer Functions:

* 1 - register car

* 2 - verify registration

* Attendent Functions:

* 22351 -plateList(): the program will output a list of the licence plates for all cars that have paid to park in the lot to the file jQuery22408484982377065953_1575742955446?c:/temp/registered.txt???.

* The attendant will then go through the parking lot to determine which users have paid and which have not Extra marks will be given for providing a sorted list.

* 22352 ??? printCharges() will print a list of all the charges for the day to the file ???c:/temp/charges.txt???

* 22353 ??? clearCars() ??? will remove all cars from the lot in preparation for a new set of customers tomorrow

* 22359 ??? used to shut down the program

* @author

* @version

*/

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import java.util.Scanner;

public class FreedomParkingArrayList {

class ParkingCar {

String regNo;

String ccNumber;

String charges;

public ParkingCar(String regNo, String ccNumber) {

this.regNo = regNo;

this.ccNumber = ccNumber;

this.charges = "$4.00";

}

}

private Map parkCarList = new HashMap<>();

public static void main(String[] args) throws IOException {

FreedomParkingArrayList freedomParking = new FreedomParkingArrayList();

Scanner k = new Scanner(System.in);

int s = freedomParking.printMenu(k);

k.nextLine();

while (s != 22359) {

switch (s) {

case 1:

// Add a car to the lot

freedomParking.addCars(k);

break;

case 2:

// verify plate

String plate;

System.out.println("Verify your registration");

System.out.print("Enter your plate number: ");

plate = k.nextLine();

// call verifyPlate h

if (freedomParking.verifyPlate(plate)) {

System.out.println("You are registered");

} else {

System.out.println("You are NOT registered");

}

System.out.print("Please enter to continue...");

k.nextLine();

break;

case 22351:

// produce a report of all the plates

freedomParking.plateList("c:/temp/registered.txt");

break;

case 22352:

// Produce a summary of charges

freedomParking.printCharges("c:/temp/charges.txt");

break;

case 22353:

// clear out all the cars from the parking lot

freedomParking.clearCars();

break;

}

s = freedomParking.printMenu(k);

// System.out.print("Please enter to continue...");

k.nextLine();

}

System.out.printf("Program complete.%n");

}

/**

* printMenu

*

* Prints out the print to the screen (after clearing the screen) and allows the

* user to input a selection

*

* @param k

*- Scanner object attached to the keyboard

* @return - menu selection as an integer

*/

public int printMenu(Scanner k) {

int s = 0;

System.out.printf("\f%n");

System.out.println("Welcome to Freedom Parking");

System.out.println("Park from 6 - Midnight for a flat fee of $4.00");

System.out.println("1. Register your vehicle");

System.out.println("2. Verify vehicle registration");

System.out.println("Please Enter any option");

s = k.nextInt();

return s;

}

/**

* addCars

*

* Will input a new plate and credit number and add them to the arrays plates

* and ccNumbers

*

* at position numCars IF the car is not currently parked in the lot. Will also

* increment numCars.

*

*

* @param k

*- Scanner object attached to the keyboard

*

*/

public void addCars(Scanner k) {

System.out.println("Please Enter your registation No (Plate no)");

String plateNo = k.next();

if (verifyPlate(plateNo)) {

System.out.println("your car is already parked");

} else {

System.out.println("Please Enter your credit card no");

String ccNo = k.next();

ParkingCar car = new FreedomParkingArrayList.ParkingCar(plateNo, ccNo);

parkCarList.put(plateNo, car);

}

}

/**

* verifyPlate

*

* Also the user to enter a licence plate and checks to see if that plate has

* been registered in the lot.

*

* Returns true if the plate was found in the lot; otherwise, false.

*

* @param plate

*- plate to be verifed

*

* @return - returns true if the input plate is found in the lot

*

*/

public boolean verifyPlate(String plate) {

boolean found = parkCarList.containsKey(plate);

return found;

}

/**

*

* printCharges

*

* Opens up a text file at a specific location and outputs a list of all charges

* associated with

*

* the lot for the evening. This is typically run the morning after. Data will

* include the licence plate,

*

* credit card number to be charged and the amount to be charged. The report

* will also include date and the

*

* total payments received.

*

* @param filePath

*- file path for output.

*

*

* @throws IOException

*

*/

public void printCharges(String filePath) throws IOException {

// write code here

File outputFile = new File(filePath);

try (BufferedWriter bw = new BufferedWriter(new FileWriter(outputFile))) {

for (String key : parkCarList.keySet()) {

ParkingCar parkingCar = parkCarList.get(key);

String output = String.format(

"Plate no : %s, Credit card no to charged : %s, Charg for parking : %s ", parkingCar.regNo,

parkingCar.ccNumber, parkingCar.charges);

System.out.println(output);

bw.write(output);

}

System.out

.println(String.format("total no of cars is %d for the date : %s", parkCarList.size(), new Date()));

System.out.println(String.format("total charges is %.2f", parkCarList.size() * 4.00));

bw.write(String.format("total no of cars is %d for the date : %s ", parkCarList.size(), new Date()));

bw.write(String.format("total charges is %.2f", parkCarList.size() * 4.00));

}

}

/**

*

* plateList

*

* Outputs a list of licence plates that are registered in the lot. Used by

* parking attendents

*

* when issuing tickets.

*

* @param filePath

*- file path for output file.

*

* @throws IOException

*

*/

public void plateList(String filePath) throws IOException {

// write code here

File outputFile = new File(filePath);

try (BufferedWriter bw = new BufferedWriter(new FileWriter(outputFile))) {

for (String key : parkCarList.keySet()) {

System.out.println(key);

bw.write(key);

}

}

}

/**

*

* clearCars

*

* Removes all the plates and credit cards from the parking lot. Typically done

* at the start of the day

*

* as this lot only offers paid public parking in the evening

*

*

*/

public void clearCars() {

// clears the arrays

parkCarList.clear();

}

}