diff --git a/src/main/java/org/Main.java b/src/main/java/org/Main.java
index 7a3d8c8..b9e3da7 100644
--- a/src/main/java/org/Main.java
+++ b/src/main/java/org/Main.java
@@ -1,20 +1,25 @@
 package org;
 
+import org.behavior.Serviceable;
+import org.model.Vehicle;
+
 public class Main {
     public static void main(String[] args) {
 
         // ============================================================
         // 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(...);
+        ElectricCar tesla = new ElectricCar(
+                "Tesla", "Model 3", 2022, 5000,
+                5, 100, 80
+        );
+        GasCar toyota = new GasCar(
+                "Toyota", "Corolla", 2018, 85000,
+                5, 50, "Petrol"
+        );
+        SportsCar ferrari = new SportsCar(
+                "Ferrari", "F8", 2021, 12000,
+                2, 60, "Petrol", 2.9
+        );
         // ============================================================
 
 
@@ -23,13 +28,7 @@ public class Main {
 
         // ============================================================
         // 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).
+        Vehicle[] vehicles={tesla,toyota,ferrari};
         // ============================================================
 
 
@@ -38,13 +37,12 @@ public class Main {
 
         // ============================================================
         // 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.
+        for (int i = 0; i < vehicles.length; i++) {
+            Vehicle v = vehicles[i];
+
+            v.basicInfo();
+            System.out.println();
+        }
         // ============================================================
 
 
@@ -53,13 +51,9 @@ public class Main {
 
         // ============================================================
         // TODO 4:
-        // Use VehicleInspector to inspect each vehicle:
-        //
-        //     VehicleInspector.inspect(v);
-        //
-        // Purpose:
-        //   • Demonstrate the use of `instanceof`
-        //   • Show subclass‑specific inspection messages
+        for (int i = 0; i < vehicles.length; i++) {
+            VehicleInspector.inspect(vehicles[i]);
+        }
         // ============================================================
 
 
@@ -68,16 +62,7 @@ public class Main {
 
         // ============================================================
         // 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;
-        //
+        Serviceable[] serviceables={tesla,toyota,ferrari};
         // ============================================================
 
 
@@ -86,24 +71,17 @@ public class Main {
 
         // ============================================================
         // 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.
+        for (int i = 0; i < serviceables.length; i++) {
+            Serviceable s = serviceables[i];
+            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();
+        }
         // ============================================================
 
 
@@ -112,15 +90,9 @@ public class Main {
 
         // ============================================================
         // TODO 7 (Optional):
-        // After everything is done, print a final message:
-        //
-        //   System.out.println("=== Workshop Completed ===");
-        //
+        System.out.println("=== Workshop Completed ===");
         // ============================================================
 
 
-
-
-
     }
 }
diff --git a/src/main/java/org/model/Car.java b/src/main/java/org/model/Car.java
index 74836b5..d15ec28 100644
--- a/src/main/java/org/model/Car.java
+++ b/src/main/java/org/model/Car.java
@@ -19,23 +19,42 @@ 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"
 
-    // TODO: Override showDetails()
-    // Print brand, model, year, mileage, and number of seats
 
-    /*
-     * 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"
-     */
+    @java.lang.Override
+    public string getEnergyType() {
+        return "Unknown";
+    }
+
+
+    // TODO: Override showDetails()
+
+    @java.lang.Override
+    public void showDetails() {
+        System.out.println(
+                getYear() + " " +getBrand() +" " +getModel()+" | Mileage: " + getMileage() + " | Seats: " + seats
+        );
+    }
+    //needService
+
+
+    @java.lang.Override
+    public boolean needsService() {
+        if (getMileage() > 10000) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+//performanceService
+@java.lang.Override
+public void performaceService(){
+        System.out.println("General car service completed");
 }
+}
\ No newline at end of file
diff --git a/src/main/java/org/model/ElectricCar.java b/src/main/java/org/model/ElectricCar.java
index 2ee9bd8..bd0422a 100644
--- a/src/main/java/org/model/ElectricCar.java
+++ b/src/main/java/org/model/ElectricCar.java
@@ -28,12 +28,49 @@ public class ElectricCar extends Car implements Chargeable {
     }
 
     // TODO: Override getEnergyType() → return "Electric"
+    @java.lang.Override
+    public String getEnergyType() {
+        return "Electric";
+    }
 
     // TODO: Override showDetails()
-    // Call super.showDetails()
-    // Print battery capacity and charge level
+    @java.lang.Override
+    public void showDetails() {
+        super.showDetails();
+
+        System.out.println(
+                "Battery:" + batteryCapacity + "| Charge Level:" + chargeLevel
+        );
+    }
 
     // TODO: Implement charge(double amount)
-    // Validate negative
-    // Cap at 100
+
+    @java.lang.Override
+    public void charge(double amount) {
+        if (amount < 0) {
+            System.out.println("Error:charge amount cannot be negative");
+        } else {
+            chargeLevel += amount;
+            if (chargeLevel > 100) {
+                chargeLevel = 100;
+            }
+        }
+    }
+
+    @java.lang.Override
+    public boolean needsService() {
+        if (getMileage() > 8000) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    @java.lang.Override
+    public void performService() {
+        System.out.println("Battery system checked");
+        chargeLevel = 100;
+    }
 }
+
+
diff --git a/src/main/java/org/model/GasCar.java b/src/main/java/org/model/GasCar.java
index 2109f93..f8cbd38 100644
--- a/src/main/java/org/model/GasCar.java
+++ b/src/main/java/org/model/GasCar.java
@@ -29,11 +29,46 @@ public class GasCar extends Car implements Refuelable {
 
     // TODO: Override getEnergyType() → return fuelType + " (Gas)"
 
+    @java.lang.Override
+    public string getEnergyType() {
+        return fuelType + " (Gas)";
+    }
+
     // TODO: Implement refuel(double amount)
-    // Validate amount
-    // Cap at 100
+    public void refuel(double amount) {
+        if (amount < 0) {
+            System.out.println("Error: fuel amount cannot be negative");
+        } else {
+            fuelLevel += amount;
+
+            if (fuelLevel > 100) {
+                fuelLevel = 100;
+            }
+        }
+    }
 
     // TODO: Override showDetails()
-    // Call super.showDetails()
-    // Print fuel level and fuel type
+
+    @java.lang.Override
+    public void showDetails() {
+        super.showDetails();
+        System.out.println(
+                "Fuel Type: " + fuelType + " | Fuel Level: " + fuelLevel
+        );
+    }
+
+    @java.lang.Override
+    public boolean needsService() {
+        if (getMileage()>12000){
+            return true;
+        }else {
+            return false;
+        }
+    }
+
+    @java.lang.Override
+    public void performaceService() {
+        System.out.println("Engine oil changed");
+        fuelLevel=100;
+    }
 }
diff --git a/src/main/java/org/model/SportsCar.java b/src/main/java/org/model/SportsCar.java
index 25f5df9..4717324 100644
--- a/src/main/java/org/model/SportsCar.java
+++ b/src/main/java/org/model/SportsCar.java
@@ -25,6 +25,22 @@ public class SportsCar extends GasCar {
     }
 
     // TODO: Override showDetails()
-    // Call super.showDetails()
-    // Print acceleration time
+
+    @java.lang.Override
+    public void showDetails() {
+        super.showDetails();
+        System.out.println(
+                "0-100 km/h: " +zeroToHundred+"seconds"
+        );
+    }
+
+    @java.lang.Override
+    public void performService() {
+        System.out.println("High-performance brake system checked");
+    }
+
+    @java.lang.Override
+    public string getEnergyType() {
+        return super.getEnergyType();
+    }
 }
diff --git a/src/main/java/org/model/Vehicle.java b/src/main/java/org/model/Vehicle.java
index 70615a9..ff5a083 100644
--- a/src/main/java/org/model/Vehicle.java
+++ b/src/main/java/org/model/Vehicle.java
@@ -22,11 +22,33 @@ 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");
+        } else {
+            mileage+= km;
+        }
+   }
 
     // TODO: Declare abstract method getEnergyType()
+    public abstract string getEnergyType();
 
     public void basicInfo() {
         System.out.println(