Complete Car project implementation.

src/main/java/org/Main.java

@@ -1,4 +1,7 @@
 package org;
+import org.model.*;
+import org.behavior.*;
+import org.util.*;
 
 public class Main {
     public static void main(String[] args) {
@@ -16,7 +19,9 @@ public class Main {
         //   • Store them in variables such as:
         //          ElectricCar tesla = new ElectricCar(...);
         // ============================================================
-
+        ElectricCar tesla = new ElectricCar("Tesla", "Model S", 2023, 9000, 5, 100, 85);
+        GasCar toyota = new GasCar("Toyota", "Camry", 2020, 15000, 5, 60, "Gasoline");
+        SportsCar ferrari = new SportsCar("Ferrari", "SF90", 2024, 4000, 2, 70, "Premium", 2.5);
 
 
 
@@ -31,6 +36,7 @@ public class Main {
         // subclasses (ElectricCar, GasCar, SportsCar) are stored
         // as their parent type (Vehicle).
         // ============================================================
+        Vehicle[] vehicles = {tesla, toyota, ferrari};
 
 
 
@@ -46,7 +52,10 @@ public class Main {
         //   Demonstrate that all subclasses share the same Vehicle
         //   behavior and can call inherited methods.
         // ============================================================
-
+        for (Vehicle v : vehicles){
+            v.basicInfo();
+            System.out.println();
+        }
 
 
 
@@ -61,7 +70,10 @@ public class Main {
         //   • Demonstrate the use of `instanceof`
         //   • Show subclass‑specific inspection messages
         // ============================================================
-
+        for (Vehicle v : vehicles){
+            VehicleInspector.inspect(v);
+            System.out.println();
+        }
 
 
 
@@ -79,7 +91,7 @@ public class Main {
         //           Vehicle v = (Vehicle) s;
         //
         // ============================================================
-
+        Serviceable[] serviceables = {tesla, toyota, ferrari};
 
 
 
@@ -105,6 +117,19 @@ public class Main {
         //
         // Add blank lines between each item for readability.
         // ============================================================
+        for (Serviceable s : serviceables){
+            Vehicle v = (Vehicle) s;
+
+            if (s.needsService(v)){
+                System.out.println(v.getBrand() + " " + v.getModel() + " needs service:");
+                s.performService();
+            }
+            else{
+                System.out.println(v.getBrand() + " " + v.getModel() + " does not need service.");
+            }
+
+            System.out.println();
+        }
 
 
 
@@ -117,10 +142,7 @@ public class Main {
         //   System.out.println("=== Workshop Completed ===");
         //
         // ============================================================
-
-
-
-
+        System.out.println("=== Workshop Completed ===");
 
     }
 }

src/main/java/org/model/Car.java

@@ -15,14 +15,18 @@ public abstract class Car extends Vehicle implements Serviceable {
 
     private int seats;
 
-    public Car(String brand, String model, int year,
-               double mileage, int seats) {
+    public Car(String brand, String model, int year, double mileage, int seats) {
 
         // TODO: Call super constructor
+        super(brand, model, year, mileage);
         this.seats = seats;
     }
 
     // TODO: Override getEnergyType() → return "Unknown"
+    @Override
+    public String getEnergyType() {
+        return "Unknown";
+    }
 
     // TODO: Override showDetails()
     // Print brand, model, year, mileage, and number of seats
@@ -38,4 +42,18 @@ public abstract class Car extends Vehicle implements Serviceable {
      * performService():
      * - Print: "General car service completed"
      */
+    @Override
+    public void showDetails(){
+        System.out.println("Car Details: " + getYear() + " " + getBrand() + " " + getModel() + " | Mileage: " + getMileage() + " | Seats: " + seats);
+    }
+
+    @Override
+    public boolean needsService(Vehicle v){
+        return v.getMileage() > 10_000;
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("General car service completed");
+    }
 }

src/main/java/org/model/ElectricCar.java

@@ -13,27 +13,58 @@ package org.model;
 
 import org.behavior.Chargeable;
 
-public class ElectricCar extends Car implements Chargeable {
+public class ElectricCar extends Car implements Chargeable{
 
     private int batteryCapacity;
     private double chargeLevel;
 
-    public ElectricCar(String brand, String model, int year,
-                       double mileage, int seats,
-                       int batteryCapacity, double chargeLevel) {
-
+    public ElectricCar(String brand, String model, int year, double mileage, int seats, int batteryCapacity, double chargeLevel) {
         super(brand, model, year, mileage, seats);
         this.batteryCapacity = batteryCapacity;
         this.chargeLevel = chargeLevel;
     }
 
     // TODO: Override getEnergyType() → return "Electric"
-
+    @Override
+    public String getEnergyType(){
+        return "Electric";
+    }
     // TODO: Override showDetails()
     // Call super.showDetails()
     // Print battery capacity and charge level
+    @Override
+    public void showDetails(){
+        super.showDetails();
+        System.out.println("Battery Capacity: " + batteryCapacity + " kWh" + " | Charge Level: " + chargeLevel + "%"
+        );
+    }
 
     // TODO: Implement charge(double amount)
     // Validate negative
     // Cap at 100
+    @Override
+    public void charge(double amount){
+        if (amount < 0){
+            System.out.println("Error: Cannot charge with negative amount.");
+            return;
+        }
+
+        chargeLevel += amount;
+
+        if (chargeLevel > 100){
+            chargeLevel = 100;
+        }
+
+        System.out.println("Charged. Current charge level: " + chargeLevel + "%");
+    }
+    @Override
+    public boolean needsService(Vehicle v){
+        return v.getMileage() > 8000;
+    }
+
+    @Override
+    public void performService(){
+        System.out.println("Battery system checked");
+        chargeLevel = 100;
+    }
 }

src/main/java/org/model/GasCar.java

@@ -28,12 +28,37 @@ public class GasCar extends Car implements Refuelable {
     }
 
     // TODO: Override getEnergyType() → return fuelType + " (Gas)"
+    @Override
+    public String getEnergyType(){
+        return fuelType + " (Gas)";
+    }
+
 
     // TODO: Implement refuel(double amount)
     // Validate amount
     // Cap at 100
+    @Override
+    public void refuel(double amount){
+        if (amount < 0){
+            System.out.println("Error: Cannot refuel with negative amount.");
+            return;
+        }
+
+        fuelLevel += amount;
+
+        if (fuelLevel > 100){
+            fuelLevel = 100;
+        }
+
+        System.out.println("Refueled. Current fuel level: " + fuelLevel + "%");
+    }
 
     // TODO: Override showDetails()
     // Call super.showDetails()
     // Print fuel level and fuel type
+    @Override
+    public void showDetails(){
+        super.showDetails();
+        System.out.println("Fuel Type: " + fuelType + " | Fuel Level: " + fuelLevel + "%");
+    }
 }

src/main/java/org/model/SportsCar.java

@@ -27,4 +27,19 @@ public class SportsCar extends GasCar {
     // TODO: Override showDetails()
     // Call super.showDetails()
     // Print acceleration time
+    @Override
+    public void showDetails(){
+        super.showDetails();
+        System.out.println("0-100 km/h Acceleration: " + zeroToHundred + " seconds");
+    }
+
+    @Override
+    public boolean needsService(Vehicle v) {
+        return v.getMileage() > 5000;
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("High-performance brake system checked");
+    }
 }

src/main/java/org/model/Vehicle.java

@@ -21,12 +21,31 @@ public abstract class Vehicle {
     }
 
     // TODO: Create getters for all fields
+    public String getBrand(){
+        return brand;
+    }
+    public String getModel(){
+        return model;
+    }
+    public int getYear(){
+        return year;
+    }
+    public double getMileage(){
+        return mileage;
+    }
 
     // TODO: Implement addMileage(double km)
     // If km is negative → print error
     // Otherwise increase mileage
-
+    public void addMileage(double km){
+        if (km < 0) {
+            System.out.println("Error: mileage cannot be negative.");
+            return;
+        }
+        this.mileage += km;
+    }
     // TODO: Declare abstract method getEnergyType()
+    public abstract String getEnergyType();
 
     public void basicInfo() {
         System.out.println(

src/main/java/org/util/VehicleInspector.java

@@ -18,5 +18,14 @@ public class VehicleInspector {
         // If ElectricCar → print "Check battery system"
         // If SportsCar → print "Check brakes and performance"
         // If GasCar → print "Check engine and oil"
+        if (v instanceof ElectricCar){
+            System.out.println("Check battery system");
+        }
+        else if (v instanceof SportsCar){
+            System.out.println("Check brakes and performance");
+        }
+        else if (v instanceof GasCar){
+            System.out.println("Check engine and oil");
+        }
     }
 }