src/main/java/org/Main.java

@@ -1,4 +1,12 @@
 package org;
+import org.model.Vehicle;
+import org.model.ElectricCar;
+import org.model.GasCar;
+import org.model.SportsCar;
+
+import org.behavior.Serviceable;
+
+import org.util.VehicleInspector;
 
 public class Main {
     public static void main(String[] args) {
@@ -16,6 +24,9 @@ public class Main {
         //   • Store them in variables such as:
         //          ElectricCar tesla = new ElectricCar(...);
         // ============================================================
+        ElectricCar tesla = new ElectricCar("Tesla", "Model S", 2023, 8500, 5, 100, 90);
+        GasCar toyota = new GasCar("Toyota", "Corolla", 2020, 13000, 5, 60, "Petrol");
+        SportsCar ferrari = new SportsCar("Ferrari", "F8", 2022, 5200, 2, 70, "Premium Gasoline", 2.9);
 
 
 
@@ -31,6 +42,7 @@ public class Main {
         // subclasses (ElectricCar, GasCar, SportsCar) are stored
         // as their parent type (Vehicle).
         // ============================================================
+        Vehicle[] vehicles = { tesla, toyota, ferrari };
 
 
 
@@ -46,6 +58,11 @@ public class Main {
         //   Demonstrate that all subclasses share the same Vehicle
         //   behavior and can call inherited methods.
         // ============================================================
+        System.out.println("=== Vehicle Info ===");
+        for (Vehicle v : vehicles) {
+            v.basicInfo();
+            System.out.println();
+        }
 
 
 
@@ -61,6 +78,11 @@ public class Main {
         //   • Demonstrate the use of `instanceof`
         //   • Show subclass‑specific inspection messages
         // ============================================================
+        System.out.println("=== Vehicle Inspection ===");
+        for (Vehicle v : vehicles) {
+            VehicleInspector.inspect(v);
+            System.out.println();
+        }
 
 
 
@@ -79,6 +101,7 @@ public class Main {
         //           Vehicle v = (Vehicle) s;
         //
         // ============================================================
+        Serviceable[] serviceables = { tesla, toyota, ferrari };
 
 
 
@@ -105,6 +128,19 @@ public class Main {
         //
         // Add blank lines between each item for readability.
         // ============================================================
+        System.out.println("=== Vehicle Service ===");
+        for (Serviceable s : serviceables) {
+            Vehicle v = (Vehicle) s;
+
+            if (s.needsService(v)) {
+                System.out.println("Servicing " + v.getBrand() + " " + v.getModel() + "...");
+                s.performService();
+            } else {
+                System.out.println(v.getBrand() + " " + v.getModel() + " does not need service.");
+            }
+
+            System.out.println();
+        }
 
 
 
@@ -117,7 +153,7 @@ public class Main {
         //   System.out.println("=== Workshop Completed ===");
         //
         // ============================================================
-
+        System.out.println("=== Workshop Completed ===");
 
 
 

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

@@ -19,10 +19,15 @@ public abstract class Car extends Vehicle implements Serviceable {
                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 +43,21 @@ public abstract class Car extends Vehicle implements Serviceable {
      * performService():
      * - Print: "General car service completed"
      */
+    @Override
+    public void showDetails() {
+        System.out.println("Brand: " + getBrand());
+        System.out.println("Model: " + getModel());
+        System.out.println("Year: " + getYear());
+        System.out.println("Mileage: " + getMileage());
+        System.out.println("Seats: " + seats);
+    }
+    @Override
+    public boolean needsService(Vehicle v) {
+        return getMileage() > 10000;
+    }
+    @Override
+    public void performService() {
+        System.out.println("General car service completed");
+    }
+
 }

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

@@ -28,12 +28,37 @@ public class ElectricCar extends Car implements Chargeable {
     }
 
     // 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");
+        System.out.println("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("Charge amount cannot be negative.");
+            return;
+        }
+
+        chargeLevel += amount;
+        if (chargeLevel > 100) {
+            chargeLevel = 100;
+        }
+
+        System.out.println("Car charged. Current charge level: " + chargeLevel + "%");
+    }
+
 }

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

@@ -28,12 +28,48 @@ 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("Fuel amount cannot be negative.");
+            return;
+        }
+
+        fuelLevel += amount;
+
+        if (fuelLevel > 100) {
+            fuelLevel = 100;
+        }
+
+        System.out.println("Car 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 Level: " + fuelLevel + "%");
+        System.out.println("Fuel Type: " + fuelType);
+    }
+    @Override
+    public boolean needsService(Vehicle v) {
+        return getMileage() > 12000;
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("Engine oil changed");
+        fuelLevel = 100;
+    }
+
 }

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 getMileage() > 5000;
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("High-performance brake system checked");
+    }
+
 }

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

@@ -21,12 +21,35 @@ 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("Mileage cannot be negative.");
+            return;
+        }
+        mileage += km;
+    }
 
     // TODO: Declare abstract method getEnergyType()
+    public abstract String getEnergyType();
 
     public void basicInfo() {
         System.out.println(

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

@@ -1,4 +1,8 @@
 package org.util;
+import org.model.Vehicle;
+import org.model.ElectricCar;
+import org.model.GasCar;
+import org.model.SportsCar;
 
 import org.*;
 import org.model.Vehicle;
@@ -18,5 +22,15 @@ 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");
+        }
+
     }
 }