OOP Car dealership

package com.company;
import java.util.*;
import java.text.*;
import java.nio.file.Path;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.io.*;
class Car {

    private String numberPlate;
    public String getNumberPlate (){
        return this.numberPlate;
    }
    public void setNumberPlate (String numberPlate){
        this.numberPlate = numberPlate;
    }
    public String model;
    public String getModel (){
        return this.model;
    }
    public void setModel (String model){
        this.model = model;
    }
    public String colour;
    public String getColour (){
        return this.colour;
    }
    public void setColour (String colour){
        this.colour = colour;
    }
    public int mileage;
    public int getMileage (){
        return this.mileage;
    }
    public void setMileage (int mileage){
        this.mileage = mileage;
    }
    public String accidentHistory;
    public String getAccidentHistory(){
        return this.accidentHistory;
    }
    public void setAccidentHistory (String accidentHistory){
        this.accidentHistory = accidentHistory;
    }
    public int price;
    public int getPrice (){
        return this.price;
    }
    public void setprice(int price{
        this.price = price;
    }
    public Date arrivalDate;
    public Date getArrivalDate (){
        return this.arrivalDate;
    }
    public void setArrivalDate (Date arrivalDate){
        this.arrivalDate = arrivalDate;
    }
    private Date sellingDate;
    public Date getSellingDate (){
        return this.sellingDate;
    }
    public void setSellingDate (Date sellingDate){
        this.sellingDate = sellingDate;
    }
    public CarType carType;
    public CarType getCarType (){
        return this.carType;
    }
    public void setCarType (CarType carType){
        this.carType = carType;
    }
    public Size size;
    public Size getSize (){
        return this.size;
    }
    public void setSize (Size size){
        this.size = size;
    }
    public Transmission transmission;
    public Transmission getTransmission (){
        return this.transmission;
    }
    public void setTransmission (Transmission transmission){
        this.transmission = transmission;
    }
    Car(){
        numberPlate = "";
        model = "";
        colour = "";
        mileage = 0;
        accidentHistory = "";
        price = 0;
        arrivalDate = new Date ();
        sellingDate = new Date ();
        carType = CarType.Saloon;
        size = Size.Large;
        transmission = Transmission.Automatic;
    }
    Car (String numberPlate, String model, String colour, int mileage, String accidentHistory, int price, String arrivalDate, String sellingDate, CarType carType, Size size, Transmission transmission){
        this.numberPlate = numberPlate;
        this.model = model;
        this.colour = colour;
        this.mileage = mileage;
        this.accidentHistory = accidentHistory;
        this.price = price;
        SimpleDateFormat dateType = new SimpleDateFormat("yyyy-mm-dd");
        try {
            this.arrivalDate = dateType.parse(arrivalDate);
            this.sellingDate = dateType.parse(sellingDate);
        }
        catch (ParseException e){
            System.out.println("wrong date");
        }
        this.carType = carType;
        this.size = size;
        this.transmission = transmission;
    }
}
enum CarType {
    Hatchback (5,4), Saloon(5,5), SUV(5,5), MPV(5,7), Van(5,3), Coupe(2,2);
    private int doors;
    private int seats;
    CarType (int doors, int seats){
        this.doors = doors;
        this.seats = seats;
    }
}
enum Size {
    Large("Large"), Small("Small");
    private String size;
    Size (String size){
        this.size = size;
    }
    public String GetSize (){
        return this.size;
    }
    public void SetSize (String size){
        this.size = size;
    }
}
enum Transmission {
    Automatic("Automatic"), Manual("Manual");
    private String transmission;
    Transmission(String transmission){
        this.transmission = transmission;
    }

    }
class Person {
    protected String username, password;
}
class Staff extends Person {
    public void AddCars(ArrayList<Car>cars){
        String filename = "Preboot:\\Users\\maximolivson\\IdeaProjects\\untitled\\src\\com\\company\\maximolivson\\IdeaProjects\\ArrayList.txt";
        String output = "";
        try{
            output = Files.lines (Paths.get(filename)).reduce("",(a,b)->a+"\n"+b);
        }
        catch (IOException fail){
            System.out.println(fail.getMessage());
        }
        System.out.println(output);



    }
    public void AddCar(Car car){


    }
    public void SellCar(Car car, ArrayList <Car>cars){
        for (Car temporaryCar:cars){
            if(car.getNumberPlate()== temporaryCar.getNumberPlate()){
                temporaryCar.setSellingDate(new Date());
                break;
            }
        }

    }
    public void PrintCars(){

    }
    public void Search2(Car car){


    }
    public void Search(String model, Transmission transmission, ArrayList<Car>cars){
        ArrayList <Car>selectedCars = new ArrayList<Car>();
        for (Car temporaryCar:cars){
            if (car.getModel() == model && car.getTransmission() == transmission){
                selectedCars.add(temporaryCar);
            }
        }


    }
    public void Search3(Car car){

    }
    public void CalculateRevenue(Car car){

    }

}
class Customer extends Person {

}
class Admin extends Staff {

}
public class Main {

    public static void main(String[] args) {
	ArrayList <Car>cars = new ArrayList<Car>();
	Staff Jon = new Staff();
	Jon.AddCars(cars);

    }
}