diff --git a/src/com/zerofiltre/parkingbot/Main.java b/src/com/zerofiltre/parkingbot/Main.java
deleted file mode 100644
index 4fac574..0000000
--- a/src/com/zerofiltre/parkingbot/Main.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package com.zerofiltre.parkingbot;
-
-public class Main {
-
-    public static void main(String[] args) {
-        System.out.println("Hello World");
-    }
-}
diff --git a/src/com/zerofiltre/parkingbot/ParkingBot.java b/src/com/zerofiltre/parkingbot/ParkingBot.java
new file mode 100644
index 0000000..8b84976
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/ParkingBot.java
@@ -0,0 +1,41 @@
+package com.zerofiltre.parkingbot;
+
+
+import com.zerofiltre.parkingbot.model.Parking;
+import com.zerofiltre.parkingbot.model.Vehicle;
+import com.zerofiltre.parkingbot.service.ParkingService;
+
+import java.util.List;
+
+import static com.zerofiltre.parkingbot.model.ParkingTypeEnum.SPOT;
+
+public class ParkingBot {
+
+    static ParkingService parkingService = new ParkingService();
+
+    /**
+     * Ceci est la méthode Main
+     *
+     * @param args : Tableau de données entrées lors du lancement de l'application
+     */
+    public static void main(String[] args) {
+Parking parking = parkingService.initParking();
+listCars(parking);
+    }
+
+    static void listCars (Parking parking){
+        if (SPOT.equals(parking.getType())){
+            Vehicle vehicle = parking.getVehicle();
+            System.out.println("Vehicule d'immatriculation "
+            + vehicle.getRegistrationNumber()
+               +" situé à la place "
+                    + vehicle.getParkingSpotNumber());
+        }else{
+            List<Parking> subParkings = parking.getSubParkings();
+            for (Parking subParking : subParkings){
+                listCars(subParking);
+            }
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/src/com/zerofiltre/parkingbot/model/Bicycle.java b/src/com/zerofiltre/parkingbot/model/Bicycle.java
new file mode 100644
index 0000000..c0fe3c9
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/model/Bicycle.java
@@ -0,0 +1,10 @@
+package com.zerofiltre.parkingbot.model;
+
+public class Bicycle extends Vehicle{
+
+    @Override
+    public String getCategory() {
+        return "2 ROUES";
+    }
+
+}
\ No newline at end of file
diff --git a/src/com/zerofiltre/parkingbot/model/Car.java b/src/com/zerofiltre/parkingbot/model/Car.java
new file mode 100644
index 0000000..d45f8bc
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/model/Car.java
@@ -0,0 +1,9 @@
+package com.zerofiltre.parkingbot.model;
+
+public class Car extends Vehicle{
+
+    @Override
+    public String getCategory() {
+        return "CITADINE";
+    }
+}
\ No newline at end of file
diff --git a/src/com/zerofiltre/parkingbot/model/Parking.java b/src/com/zerofiltre/parkingbot/model/Parking.java
new file mode 100644
index 0000000..555b385
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/model/Parking.java
@@ -0,0 +1,47 @@
+package com.zerofiltre.parkingbot.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Parking {
+
+    List<Parking> subParkings = new ArrayList<>();
+    Vehicle vehicle;
+    int number;
+
+    public Vehicle getVehicle() {
+        return vehicle;
+    }
+
+    public void setVehicle(Vehicle vehicle) {
+        this.vehicle = vehicle;
+    }
+
+    public List<Parking> getSubParkings() {
+        return subParkings;
+    }
+
+    public void setSubParkings(List<Parking> subParkings) {
+        this.subParkings = subParkings;
+    }
+
+    public int getNumber() {
+        return number;
+    }
+
+    public void setNumber(int number) {
+        this.number = number;
+    }
+
+    public ParkingTypeEnum getType() {
+        return type;
+    }
+
+    public void setType(ParkingTypeEnum type) {
+        this.type = type;
+    }
+
+    ParkingTypeEnum type;
+
+
+}
diff --git a/src/com/zerofiltre/parkingbot/model/ParkingTypeEnum.java b/src/com/zerofiltre/parkingbot/model/ParkingTypeEnum.java
new file mode 100644
index 0000000..f0393ef
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/model/ParkingTypeEnum.java
@@ -0,0 +1,9 @@
+package com.zerofiltre.parkingbot.model;
+
+public enum ParkingTypeEnum {
+
+    BUILDING,
+    FLOOR,
+    HALL,
+    SPOT
+}
diff --git a/src/com/zerofiltre/parkingbot/model/Ticket.java b/src/com/zerofiltre/parkingbot/model/Ticket.java
new file mode 100644
index 0000000..5437568
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/model/Ticket.java
@@ -0,0 +1,49 @@
+package com.zerofiltre.parkingbot.model;
+
+import java.util.Date;
+
+public class Ticket {
+
+    private double  amount;
+    private Vehicle vehicle;
+    private Date enteringTime;
+    private Date exitTime;
+
+    public double getAmount() {
+        return amount;
+    }
+
+    public void setAmount(double amount) {
+        this.amount = amount;
+    }
+
+    public Vehicle getVehicle() {
+        return vehicle;
+    }
+
+    public void setVehicle(Vehicle vehicle) {
+        this.vehicle = vehicle;
+    }
+
+    public Date getEnteringTime() {
+        return enteringTime;
+    }
+
+    public void setEnteringTime(Date enteringTime) {
+        this.enteringTime = enteringTime;
+    }
+
+    public Date getExitTime() {
+        return exitTime;
+    }
+
+    public void setExitTime(Date exitTime) {
+        this.exitTime = exitTime;
+    }
+
+    @Override
+    public String toString() {
+       return "Ticket d'un montant de :" +amount+ " € pour véhicule de type " + vehicle.getCategory() + " immatriculé: " +vehicle.getRegistrationNumber()+ " entré à " + enteringTime + " et sorti à " + exitTime;
+
+    }
+}
diff --git a/src/com/zerofiltre/parkingbot/model/Vehicle.java b/src/com/zerofiltre/parkingbot/model/Vehicle.java
new file mode 100644
index 0000000..87c1c0a
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/model/Vehicle.java
@@ -0,0 +1,28 @@
+package com.zerofiltre.parkingbot.model;
+
+public class Vehicle {
+
+    private String registrationNumber;
+
+    private String parkingSpotNumber;
+
+    public String getRegistrationNumber() {
+        return registrationNumber;
+    }
+
+    public void setRegistrationNumber(String registrationNumber) {
+        this.registrationNumber = registrationNumber;
+    }
+
+    public String getCategory() {
+        return "VEHICLE";
+    }
+
+    public String getParkingSpotNumber() {
+        return parkingSpotNumber;
+    }
+
+    public void setParkingSpotNumber(String parkingSpotNumber) {
+        this.parkingSpotNumber = parkingSpotNumber;
+    }
+}
\ No newline at end of file
diff --git a/src/com/zerofiltre/parkingbot/service/ParkingService.java b/src/com/zerofiltre/parkingbot/service/ParkingService.java
new file mode 100644
index 0000000..5346d48
--- /dev/null
+++ b/src/com/zerofiltre/parkingbot/service/ParkingService.java
@@ -0,0 +1,80 @@
+package com.zerofiltre.parkingbot.service;
+
+import com.zerofiltre.parkingbot.model.Parking;
+import com.zerofiltre.parkingbot.model.ParkingTypeEnum;
+import com.zerofiltre.parkingbot.model.Ticket;
+import com.zerofiltre.parkingbot.model.Vehicle;
+import java.security.SecureRandom;
+import java.util.Date;
+
+public class ParkingService {
+
+    public Ticket processIncomingVehicle(Vehicle vehicle) {
+        Ticket ticket = new Ticket();
+        Date now = new Date();
+        ticket.setEnteringTime(now);
+        ticket.setVehicle(vehicle);
+        return ticket;
+    }
+
+    public Ticket processExitingVehicle(Ticket ticket) {
+        long now = new Date().getTime();
+        now += 60 * 60 * 1000;
+
+        Date exitTime = new Date(now);
+        ticket.setExitTime(exitTime);
+
+        Vehicle vehicle = ticket.getVehicle();
+        String category = vehicle.getCategory();
+
+        double pricePerMinForCitadine = 0.08;
+        double pricePerMinFor2Roues = 0.02;
+        double defaultPricePerMin = 0.05;
+        long durationInMinutes = (ticket.getExitTime().getTime() - ticket.getEnteringTime().getTime()) / (60 * 1000);
+
+        double finalPrice = 0;
+
+        if ("CITADINE".equals(category)) {
+            finalPrice = durationInMinutes * pricePerMinForCitadine;
+        } else if ("2 ROUES".equals(category)) {
+            finalPrice = durationInMinutes * pricePerMinFor2Roues;
+        } else {
+            finalPrice = durationInMinutes * defaultPricePerMin;
+        }
+        ticket.setAmount(finalPrice);
+
+        return ticket;
+
+    }
+
+    public Parking initParking() {
+        Parking building = new Parking();
+        building.setType(ParkingTypeEnum.BUILDING);
+        building.setNumber(1);
+        for (int i = 0; i < 50; i++) {
+            Parking floor = new Parking();
+            floor.setType(ParkingTypeEnum.FLOOR);
+            floor.setNumber(i);
+
+            for (int j = 1; j <= 30; j++) {
+                Parking hall = new Parking();
+                hall.setType(ParkingTypeEnum.HALL);
+                hall.setNumber(j);
+                for (int k = 1; k <= 20; k++) {
+                    Parking spot = new Parking();
+                    spot.setType(ParkingTypeEnum.SPOT);
+                    spot.setNumber(k);
+                    Vehicle vehicle = new Vehicle();
+                    vehicle.setRegistrationNumber(String.valueOf(new SecureRandom().nextInt(10000)));
+                    vehicle.setParkingSpotNumber("");
+                    vehicle.setParkingSpotNumber("1-" + i + "-" + j + "-" + k);
+                    spot.setVehicle(vehicle);
+                    hall.getSubParkings().add(spot);
+                }
+                floor.getSubParkings().add(hall);
+            }
+            building.getSubParkings().add(floor);
+        }
+        return building;
+    }
+}
\ No newline at end of file