From 2d6c7be01e1bd91802725f15c813641fcefe52aa Mon Sep 17 00:00:00 2001 From: ava Date: Thu, 30 Apr 2026 12:06:26 +0330 Subject: [PATCH] complete to do codes --- src/main/java/org/Main.java | 38 +++++++++++++++++++- src/main/java/org/model/Car.java | 22 ++++++++++++ src/main/java/org/model/ElectricCar.java | 25 +++++++++++++ src/main/java/org/model/GasCar.java | 36 +++++++++++++++++++ src/main/java/org/model/SportsCar.java | 15 ++++++++ src/main/java/org/model/Vehicle.java | 23 ++++++++++++ src/main/java/org/util/VehicleInspector.java | 14 ++++++++ 7 files changed, 172 insertions(+), 1 deletion(-) diff --git a/src/main/java/org/Main.java b/src/main/java/org/Main.java index 7a3d8c8..46364da 100644 --- a/src/main/java/org/Main.java +++ b/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 ==="); diff --git a/src/main/java/org/model/Car.java b/src/main/java/org/model/Car.java index 74836b5..e99bbbc 100644 --- a/src/main/java/org/model/Car.java +++ b/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"); + } + } diff --git a/src/main/java/org/model/ElectricCar.java b/src/main/java/org/model/ElectricCar.java index 2ee9bd8..a4d7a1a 100644 --- a/src/main/java/org/model/ElectricCar.java +++ b/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 + "%"); + } + } diff --git a/src/main/java/org/model/GasCar.java b/src/main/java/org/model/GasCar.java index 2109f93..3f4e089 100644 --- a/src/main/java/org/model/GasCar.java +++ b/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; + } + } diff --git a/src/main/java/org/model/SportsCar.java b/src/main/java/org/model/SportsCar.java index 25f5df9..b0665f1 100644 --- a/src/main/java/org/model/SportsCar.java +++ b/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"); + } + } diff --git a/src/main/java/org/model/Vehicle.java b/src/main/java/org/model/Vehicle.java index 70615a9..356e6d5 100644 --- a/src/main/java/org/model/Vehicle.java +++ b/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( diff --git a/src/main/java/org/util/VehicleInspector.java b/src/main/java/org/util/VehicleInspector.java index c83c420..3913c54 100644 --- a/src/main/java/org/util/VehicleInspector.java +++ b/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"); + } + } }