src/main/java/org/Main.java

@@ -1,5 +1,12 @@
 package org;
 
+import org.behavior.Serviceable;
+import org.model.*;
+import org.util.VehicleInspector;
+
+import java.util.ArrayList;
+
+
 public class Main {
     public static void main(String[] args) {
 
@@ -16,8 +23,23 @@ public class Main {
         //   • Store them in variables such as:
         //          ElectricCar tesla = new ElectricCar(...);
         // ============================================================
+        ElectricCar tesla = new ElectricCar(
+                "Tesla", "Model S", 2022, 1000,
+                100, 550, 50   // batteryCapacity, range
+        );
 
+        GasCar toyota = new GasCar(
+                "Toyota", "Corolla", 2018, 85000,
+                5, 50, "Petrol"   // seats, fuelCapacity, fuelType
+        );
 
+        SportsCar ferrari = new SportsCar(
+                "Ferrari", "F8 Tributo", 2021, 12000,
+                2, 3.9, "oil", 710   // seats, engineSize, horsepower
+        );
+
+        HybridCar tara = new HybridCar("Tara", "Model s", 2020,
+                1000, 4, 45 ,80);
 
 
 
@@ -31,7 +53,7 @@ public class Main {
         // subclasses (ElectricCar, GasCar, SportsCar) are stored
         // as their parent type (Vehicle).
         // ============================================================
-
+        Vehicle[] vehicles = {tesla, toyota, ferrari, tara};
 
 
 
@@ -47,6 +69,12 @@ public class Main {
         //   behavior and can call inherited methods.
         // ============================================================
 
+        for(Vehicle v: vehicles)
+        {
+            v.basicInfo();
+            System.out.println();
+        }
+
 
 
 
@@ -61,7 +89,11 @@ 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 +111,7 @@ public class Main {
         //           Vehicle v = (Vehicle) s;
         //
         // ============================================================
-
+        Serviceable[] serviceables = {tesla, toyota, ferrari, tara};
 
 
 
@@ -105,6 +137,21 @@ 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());
+                s.performService();
+            }
+            else
+            {
+                System.out.println("The " + v.getBrand() + " " + v.getModel() + " "
+                                    + "does not need service");
+            }
+            System.out.println();
+        }
 
 
 
@@ -118,7 +165,7 @@ public class Main {
         //
         // ============================================================
 
-
+        System.out.println("=== Workshop Completed ===");
 
 
 

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

@@ -19,14 +19,27 @@ 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
 
+    @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("Number of seats: " + seats);
+    }
+
     /*
      * Implement Serviceable methods:
      *
@@ -38,4 +51,16 @@ public abstract class Car extends Vehicle implements Serviceable {
      * performService():
      * - Print: "General car service completed"
      */
+
+    @Override
+    public boolean needsService(Vehicle v)
+    {
+        return v.getMileage() > 10000;
+    }
+
+    @Override
+    public void performService()
+    {
+        System.out.println("General car service completed");
+    }
 }

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

@@ -29,11 +29,62 @@ 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);
+        System.out.println("Charge level: " + chargeLevel);
+    }
+
+
     // TODO: Implement charge(double amount)
     // Validate negative
     // Cap at 100
+    @Override
+    public void charge(double amount)
+    {
+        if (chargeLevel == 100)
+        {
+            System.out.println("The car is full!");
+        }
+        else if(amount <= 0)
+        {
+            System.out.println("charge amount must be positive number!");
+            return;
+        }
+        else if(amount > (100 - chargeLevel))
+        {
+            System.out.printf("The amount can be from %d to %f", 0, 100 - chargeLevel);
+            return;
+        }
+        chargeLevel += amount;
+
+    }
+
+    //Serviceable methods
+
+
+    @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

@@ -29,11 +29,63 @@ 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 (fuelLevel == 100)
+        {
+            System.out.println("The car is full!");
+            return;
+        }
+        else if(amount <= 0 )
+        {
+            System.out.println("error: fuel must have positive amount!");
+            return;
+        }
+        else if (amount > (100 - fuelLevel))
+        {
+            System.out.printf("The amount can be from %d to %f", 0, 100 - fuelLevel);
+            return;
+        }
+
+        fuelLevel += amount;
+    }
+
     // TODO: Override showDetails()
     // Call super.showDetails()
     // Print fuel level and fuel type
+
+    @Override
+    public void showDetails()
+    {
+        super.showDetails();
+        System.out.println("Fuel type: " + fuelType);
+        System.out.println("Fuel level: " + fuelLevel);
+    }
+
+
+    //Serviceable methods
+
+    @Override
+    public boolean needsService(Vehicle v)
+    {
+        return v.getMileage() > 12000;
+    }
+
+    @Override
+    public void performService()
+    {
+        System.out.println("Engine oil changed");
+        fuelLevel = 100;
+    }
 }

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

@@ -0,0 +1,92 @@
+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 String getEnergyType()
+    {
+        return "gas and electric";
+    }
+
+    @Override
+    public void showDetails()
+    {
+        super.showDetails();
+        System.out.println("Battery level: " + batteryLevel);
+        System.out.println("Fuel level: " + fuelLevel);
+    }
+
+    @Override
+    public void refuel(double amount)
+    {
+        if (fuelLevel == 100)
+        {
+            System.out.println("The car is full!");
+            return;
+        }
+        else if(amount <= 0 )
+        {
+            System.out.println("error: fuel must have positive amount!");
+            return;
+        }
+        else if (amount > (100 - fuelLevel))
+        {
+            System.out.printf("The amount can be from %d to %f", 0, 100 - fuelLevel);
+            return;
+        }
+
+        fuelLevel += amount;
+    }
+
+    @Override
+    public void charge(double amount)
+    {
+        if (batteryLevel == 100)
+        {
+            System.out.println("The car is full!");
+        }
+        else if(amount <= 0)
+        {
+            System.out.println("charge amount must be positive number!");
+            return;
+        }
+        else if(amount > (100 - batteryLevel))
+        {
+            System.out.printf("The amount can be from %d to %f", 0, 100 - batteryLevel);
+            return;
+        }
+        batteryLevel += amount;
+    }
+
+    //Serviceable methods
+
+
+    @Override
+    public boolean needsService(Vehicle v)
+    {
+        return v.getMileage() > 10000;
+    }
+
+    @Override
+    public void performService()
+    {
+        System.out.println("Engine oil changed and battery system checked");
+        batteryLevel = 100;
+        fuelLevel = 100;
+    }
+}

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

@@ -27,4 +27,26 @@ public class SportsCar extends GasCar {
     // TODO: Override showDetails()
     // Call super.showDetails()
     // Print acceleration time
+
+    @Override
+    public void showDetails()
+    {
+        super.showDetails();
+        System.out.println("Acceleration time: " + zeroToHundred);
+    }
+
+    //Serviceable methods
+
+
+    @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 +21,24 @@ 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: km can not 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

@@ -1,7 +1,7 @@
 package org.util;
 
 import org.*;
-import org.model.Vehicle;
+import org.model.*;
 
 /*
  * Utility class to inspect vehicles.
@@ -18,5 +18,21 @@ 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");
+        }
+        else if(v instanceof HybridCar)
+        {
+            System.out.println("Check Engine, oil and battery system");
+        }
     }
 }