src/main/java/org/Main.java

@@ -1,126 +1,54 @@
 package org;
 
+import org.behavior.Serviceable;
+import org.model.*;
+import org.util.VehicleInspector;
+
 public class Main {
     public static void main(String[] args) {
+        ElectricCar tesla = new ElectricCar(
+                "Tesla", "Model S", 2022, 1000,
+                100, 550, 50
+        );
 
-        // ============================================================
-        // TODO 1:
-        // Create one instance of each vehicle type:
-        //    - ElectricCar
-        //    - GasCar
-        //    - SportsCar
-        //
-        // Requirements:
-        //   • Use the constructors you created in each class.
-        //   • Provide realistic values (brand, model, year, mileage, etc.).
-        //   • Store them in variables such as:
-        //          ElectricCar tesla = new ElectricCar(...);
-        // ============================================================
-
-
-
-
-
-        // ============================================================
-        // TODO 2:
-        // Create an array of Vehicle:
-        //       Vehicle[] vehicles = { ... };
-        //
-        // This array MUST contain the objects created above.
-        // This demonstrates **polymorphism** because all different
-        // subclasses (ElectricCar, GasCar, SportsCar) are stored
-        // as their parent type (Vehicle).
-        // ============================================================
-
-
-
-
-
-        // ============================================================
-        // TODO 3:
-        // Loop through the Vehicle[] array and:
-        //   • Call v.basicInfo();
-        //   • Print a blank line after each.
-        //
-        // Purpose:
-        //   Demonstrate that all subclasses share the same Vehicle
-        //   behavior and can call inherited methods.
-        // ============================================================
-
-
-
-
-
-        // ============================================================
-        // TODO 4:
-        // Use VehicleInspector to inspect each vehicle:
-        //
-        //     VehicleInspector.inspect(v);
-        //
-        // Purpose:
-        //   • Demonstrate the use of `instanceof`
-        //   • Show subclass‑specific inspection messages
-        // ============================================================
-
-
-
-
-
-        // ============================================================
-        // TODO 5:
-        // Create an array of Serviceable:
-        //       Serviceable[] serviceables = { ... };
-        //
-        // This demonstrates **interface‑based polymorphism**.
-        // Every Car subtype implements Serviceable.
-        //
-        // IMPORTANT:
-        //   • You must cast to Vehicle when needed:
-        //           Vehicle v = (Vehicle) s;
-        //
-        // ============================================================
-
-
-
-
-
-        // ============================================================
-        // TODO 6:
-        // Loop through the Serviceable[] array:
-        //
-        // Steps inside loop:
-        //
-        //   1. Cast the current object to Vehicle:
-        //          Vehicle v = (Vehicle) s;
-        //
-        //   2. Check:
-        //          if (s.needsService(v)) { ... }
-        //
-        //   3. If true:
-        //          - Print a message showing brand + model
-        //          - Call s.performService();
-        //
-        //   4. Otherwise:
-        //          - Print that the car does not need service
-        //
-        // Add blank lines between each item for readability.
-        // ============================================================
-
-
-
-
-
-        // ============================================================
-        // TODO 7 (Optional):
-        // After everything is done, print a final message:
-        //
-        //   System.out.println("=== Workshop Completed ===");
-        //
-        // ============================================================
+        GasCar toyota = new GasCar(
+                "Toyota", "Corolla", 2018, 85000,
+                5, 50, "Petrol"
+        );
 
+        SportsCar ferrari = new SportsCar(
+                "Ferrari", "F8 Tributo", 2021, 12000,
+                2, 3.9, "oil", 710
+        );
 
+        HybridCar Honda = new HybridCar(
+                "Honda",  "Accord Hybrid" , 2022 , 35000,
+                5 , 82 ,65
 
+        );
 
+        Vehicle[] vehicles =  {tesla , toyota , ferrari , Honda};
+        for (int i = 0 ; i< vehicles.length; i++){
+            vehicles[i].basicInfo();
+            System.out.println();
+        }
+        VehicleInspector.inspect(tesla);
+        VehicleInspector.inspect(toyota);
+        VehicleInspector.inspect(ferrari);
+        VehicleInspector.inspect(Honda);
+        Serviceable[] serviceables = {tesla , toyota , ferrari , Honda};
+        for (int i = 0 ; i< vehicles.length; i++){
+            Vehicle v = (Vehicle) serviceables[i];
+            if (serviceables[i].needsService(v)) {
+                System.out.println("Brand : "+v.getBrand() +" Model : "+v.getModel());
+                serviceables[i].performService();
+                System.out.println();
+            }else{
+                System.out.println(v.getBrand()+" does not need service");
+                System.out.println();
+            }
+        }
+        System.out.println("=== Workshop Completed ===");
 
     }
 }

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

@@ -1,41 +1,40 @@
 package org.model;
 
-/*
- * Car extends Vehicle.
- * This class SHOULD implement Serviceable.
- *
- * Service logic for Car:
- * - needsService(): return true if mileage > 10,000
- * - performService(): print "General car service completed"
- */
-
 import org.behavior.Serviceable;
 
 public abstract class Car extends Vehicle implements Serviceable {
 
     private int seats;
 
-    public Car(String brand, String model, int year,
-               double mileage, int seats) {
-
-        // TODO: Call super constructor
+    public Car(String brand, String model, int year, double mileage, int seats) {
+        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
+    @Override
+    public void showDetails() {
+        super.basicInfo();
+        System.out.println(" | Seats: " + seats);
+    }
+
+    @Override
+    public boolean needsService(Vehicle v) {
+        if (v.getMileage()> 10000){
+            return true;
+        }else{
+            return false;
+        }
+
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("General car service completed");
+    }
 
-    /*
-     * Implement Serviceable methods:
-     *
-     * needsService(Vehicle v):
-     * - Check the mileage of the current car
-     * - If mileage > 10000 return true
-     * - Otherwise return false
-     *
-     * performService():
-     * - Print: "General car service completed"
-     */
 }

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

@@ -1,16 +1,5 @@
 package org.model;
 
-/*
- * ElectricCar extends Car.
- * It already inherits Serviceable from Car.
- *
- * Service logic for ElectricCar:
- * - needsService(): return true if mileage > 8000
- * - performService():
- *     Print "Battery system checked"
- *     Reset chargeLevel to 100
- */
-
 import org.behavior.Chargeable;
 
 public class ElectricCar extends Car implements Chargeable {
@@ -27,13 +16,42 @@ public class ElectricCar extends Car implements Chargeable {
         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+" | 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("Invalid amount! Must be positive.");
+            return;
+        }
+        if (chargeLevel + amount > 100) {
+            chargeLevel = 100;
+            System.out.println("Battery is fully charged! Charge level is now 100.0%");
+        }else {
+            chargeLevel += amount;
+            System.out.println("Added " + amount + "% charge. Charge level is now " + chargeLevel + "%");
+        }
+    }
+    @Override
+    public boolean needsService(Vehicle v) {
+        if (v.getMileage()> 8000){
+            return true;
+        }else{
+            return false;
+        }
+    }
+    @Override
+    public void performService() {
+        System.out.println("Battery system checked");
+        chargeLevel = 100;
+    }
 }

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

@@ -1,15 +1,5 @@
 package org.model;
 
-/*
- * GasCar extends Car.
- * Inherits Serviceable from Car.
- *
- * Service logic for GasCar:
- * - needsService(): return true if mileage > 12000
- * - performService():
- *     Print "Engine oil changed"
- *     Reset fuelLevel to 100
- */
 
 import org.behavior.Refuelable;
 
@@ -27,13 +17,45 @@ public class GasCar extends Car implements Refuelable {
         this.fuelType = fuelType;
     }
 
-    // TODO: Override getEnergyType() → return fuelType + " (Gas)"
+    @Override
+    public boolean needsService(Vehicle v) {
+        if (v.getMileage()> 12000){
+            return true;
+        }else{
+            return false;
+        }
+    }
 
-    // TODO: Implement refuel(double amount)
-    // Validate amount
-    // Cap at 100
+    @Override
+    public void performService() {
+        System.out.println("Engine oil changed");
+        fuelLevel = 100;
+    }
 
-    // TODO: Override showDetails()
-    // Call super.showDetails()
-    // Print fuel level and fuel type
+    @Override
+    public String getEnergyType() {
+        return fuelType + " (Gas)";
+    }
+
+    @Override
+    public void refuel(double amount) {
+        if (amount <= 0){
+            System.out.println("Invalid amount! Must be positive.");
+            return;
+        }
+        if (fuelLevel + amount > 100) {
+            fuelLevel = 100;
+            System.out.println("Tank is full! Fuel level is now 100.0");
+        } else {
+            fuelLevel += amount;
+            System.out.println("Added " + amount + " units. Fuel level is now " + fuelLevel);
+        }
+
+    }
+
+    @Override
+    public void showDetails() {
+        super.showDetails();
+        System.out.println(" | fuel Level: "+fuelLevel+" | fuel Type: "+fuelType);
+    }
 }

src/main/java/org/model/HybridCar.java

@@ -0,0 +1,65 @@
+package org.model;
+
+import org.behavior.Chargeable;
+import org.behavior.Refuelable;
+
+public class HybridCar extends Car implements Refuelable, Chargeable {
+    private double batteryLevel;
+    private double fuelLevel;
+    public HybridCar(String brand, String model, int year,
+                     double mileage, int seats,
+                     double batteryLevel, double fuelLevel){
+        super(brand , model , year , mileage, seats);
+        this.batteryLevel = batteryLevel;
+        this.fuelLevel= fuelLevel;
+
+    }
+
+    @Override
+    public boolean needsService(Vehicle v) {
+        if (v.getMileage()> 10000){
+            return true;
+        }else{
+            return false;
+        }
+    }
+
+    @Override
+    public void performService() {
+        System.out.println("Engine oil changed and battery system checked");
+        fuelLevel = 100;
+        batteryLevel = 100;
+    }
+
+    @Override
+    public void refuel(double amount) {
+        if (amount <= 0){
+            System.out.println("Invalid amount! Must be positive.");
+            return;
+        }
+        if (fuelLevel + amount > 100) {
+            fuelLevel = 100;
+            System.out.println("Tank is full! Fuel level is now 100.0");
+        } else {
+            fuelLevel += amount;
+            System.out.println("Added " + amount + " units. Fuel level is now " + fuelLevel);
+        }
+
+    }
+
+    @Override
+    public void charge(double amount) {
+        if (amount <= 0){
+            System.out.println("Invalid amount! Must be positive.");
+            return;
+        }
+        if (batteryLevel + amount > 100) {
+            batteryLevel = 100;
+            System.out.println("Battery is fully charged! battery level is now 100.0");
+        } else {
+            batteryLevel += amount;
+            System.out.println("Added " + amount + " units. Battery level is now " + batteryLevel);
+        }
+
+    }
+}

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

@@ -1,14 +1,5 @@
 package org.model;
 
-/*
- * SportsCar extends GasCar.
- *
- * Special service logic for SportsCar:
- * - needsService(): return true if mileage > 5000
- * - performService():
- *     Print "High-performance brake system checked"
- */
-
 public class SportsCar extends GasCar {
 
     private double zeroToHundred;
@@ -24,7 +15,26 @@ public class SportsCar extends GasCar {
         this.zeroToHundred = zeroToHundred;
     }
 
-    // TODO: Override showDetails()
-    // Call super.showDetails()
-    // Print acceleration time
+    @Override
+    public boolean needsService(Vehicle v) {
+        if (v.getMileage()> 5000){
+            return true;
+        }else{
+            return false;
+        }
+    }
+
+    @Override
+    public void performService() {
+        super.performService();
+        System.out.println("High-performance brake system checked");
+    }
+
+    @Override
+    public void showDetails() {
+        super.showDetails();
+        System.out.println(" | Acceleration time (0-100): " + zeroToHundred + " seconds");
+    }
+
+
 }

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

@@ -19,14 +19,29 @@ public abstract class Vehicle {
         this.year = year;
         this.mileage = mileage;
     }
+    public String getBrand(){
+        return brand;
+    }
+    public String getModel(){
+        return model;
+    }
+    public int getYear(){
+        return year;
+    }
+    public double getMileage(){
+        return mileage;
+    }
+    public void addMileage(double km){
+        if (km < 0){
+            System.out.println("error");
+        } else{
+            mileage+= km;
+        }
+    }
+    public abstract String getEnergyType();
 
-    // TODO: Create getters for all fields
 
-    // TODO: Implement addMileage(double km)
-    // If km is negative → print error
-    // Otherwise increase mileage
 
-    // TODO: Declare abstract method getEnergyType()
 
     public void basicInfo() {
         System.out.println(

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

@@ -1,22 +1,24 @@
 package org.util;
 
 import org.*;
-import org.model.Vehicle;
-
-/*
- * Utility class to inspect vehicles.
- * Demonstrates instanceof and polymorphism.
- */
+import org.model.*;
 
 public class VehicleInspector {
 
     public static void inspect(Vehicle v) {
 
-        v.basicInfo();
 
-        // TODO:
-        // If ElectricCar → print "Check battery system"
-        // If SportsCar → print "Check brakes and performance"
-        // If GasCar → print "Check engine and oil"
+        v.basicInfo();
+        if (v instanceof SportsCar) {
+            System.out.println("Check brakes and performance");
+        } else if (v instanceof ElectricCar) {
+            System.out.println("Check battery system");
+        } else if (v instanceof HybridCar) {
+            System.out.println("Check engine and battery systems");
+        } else if (v instanceof GasCar) {
+            System.out.println("Check engine and oil");
+        }
+        System.out.println();
+
     }
 }