It seems like you're looking to develop an application that compares the best models among 2 wheelers and 4 wheelers, and I'm here to help. You can create a super class called Vehicle, from which you can derive the sub-classes TwoWheeler and FourWheeler.

Here the properties for each sub-class:

TwoWheeler:

• Company
• Model
• Mileage
• Fuel Capacity- Displacement
• Front Brake
• Rear Brake
• Tyre Type Headlamp
• User Reviews

FourWheeler: Company

• Model
• Mileage
• Fuel Capacity -placement
• Air Conditioner
• Air Bags
• Power Steering Rain Sensing Wiper

You can maintain at least four2-wheelers and four 4-wheelers in the repository with their.

The application usage will involve displaying all the companies and models of 2 and 4 wheelers available in the repository. Users can then choose any number of vehicles to compare, and the application will compare them and display the company and model of the recommended vehicle to buy. If the user opts for 2 wheelers, only 2 wheeler will be compared, and the same goes for 4 wheelers.

To further assist, I can help you the structure of the classes and methods in a programming language of your choice. Let me know if you need further assistance with this application.

Certainly! Below is an example of how you can write the Java code for the application based on the given requirements. We'll start by creating the Vehicle super class, and then we'll derive the TwoWheeler and FourWheeler sub-classes.

// Vehicle super class
class Vehicle {
    String company;
    String model;
    double mileage;
    double fuelCapacity;
    double displacement;
    // Other common properties and methods

    // Constructor
    public Vehicle(String company, String model, double mileage, double fuelCapacity, double displacement) {
        this.company = company;
        this.model = model;
        this.mileage = mileage;
        this.fuelCapacity = fuelCapacity;
        this.displacement = displacement;
    }
}

// TwoWheeler sub-class
class TwoWheeler extends Vehicle {
    String frontBrake;
    String rearBrake;
    String tyreType;
    String headLamp;
    String userReviews;
    // Other properties specific to TwoWheeler

    // Constructor
    public TwoWheeler(String company, String model, double mileage, double fuelCapacity, double displacement, String frontBrake, String rearBrake, String tyreType, String headLamp, String userReviews) {
        super(company, model, mileage, fuelCapacity, displacement);
        this.frontBrake = frontBrake;
        this.rearBrake = rearBrake;
        this.tyreType = tyreType;
        this.headLamp = headLamp;
        this.userReviews = userReviews;
    }
}

// FourWheeler sub-class
class FourWheeler extends Vehicle {
    boolean airConditioner;
    boolean airBags;
    boolean powerSteering;
    boolean rainSensingWiper;
    // Other properties specific to FourWheeler

    // Constructor
    public FourWheeler(String company, String model, double mileage, double fuelCapacity, double displacement, boolean airConditioner, boolean airBags, boolean powerSteering, boolean rainSensingWiper) {
        super(company, model, mileage, fuelCapacity, displacement);
        this.airConditioner = airConditioner;
        this.airBags = airBags;
        this.powerSteering = powerSteering;
        this.rainSensingWiper = rainSensingWiper;
    }
}

// Main application class
public class VehicleComparisonApp {
    public static void main(String[] args) {
        // Create instances of TwoWheeler and FourWheeler, add them to repository, and perform comparisons as required
    }
}

Please note that this code provides the basic structure for the Vehicle, TwoWheeler, and FourWheeler classes, but it does not include the repository or the comparison logic. You would need to further develop the main application class with repository management and comparison methods as per your specific requirements.

Let me know if you need further assistance with this or any other aspect of the application!

Certainly! I can provide a simple implementation of the main method for the vehicle comparison application. In the main method, we can create instances of TwoWheeler and FourWheeler, add them to a repository, allow the user to choose vehicles to compare, and then display the recommended vehicle to buy based on the comparison.

Here's an example of how the main method implementation might look:

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class VehicleComparisonApp {
    public static void main(String[] args) {
        List<Vehicle> repository = new ArrayList<>();

        // Creating instances of TwoWheeler and FourWheeler and adding them to the repository
        TwoWheeler bike1 = new TwoWheeler("Honda", "Activa", 45, 5, 110, "Disc", "Drum", "Tubeless", "LED", "Great");
        repository.add(bike1);

        FourWheeler car1 = new FourWheeler("Toyota", "Camry", 18, 60, 2500, true, true, true, true);
        repository.add(car1);

        // Getting user input for vehicle comparison
        Scanner scanner = new Scanner(System.in);
        System.out.println("Available vehicles for comparison:");
        for (Vehicle vehicle : repository) {
            System.out.println(vehicle.company + " " + vehicle.model);
        }
        System.out.println("Enter the company and model of the vehicle to compare: ");
        String userChoice = scanner.nextLine();

        // Comparing and displaying the recommended vehicle to buy
        for (Vehicle vehicle : repository) {
            if ((vehicle.company + " " + vehicle.model).equalsIgnoreCase(userChoice)) {
                System.out.println("Recommended vehicle to buy: " + vehicle.company + " " + vehicle.model);
                // Implement comparison logic based on specific properties of TwoWheeler and FourWheeler
                // For example, comparing mileage, handling, safety features, etc.
            }
        }
    }
}

In this implementation of the main method, we create instances of a TwoWheeler and a FourWheeler and add them to the repository. Then we prompt the user to choose a vehicle for comparison and display the recommended vehicle to buy. This is a basic implementation and can be extended to include additional functionality and comparison logic based on specific properties of the vehicles.

Let me know if you need further assistance or modifications to this implementation!

Certainly! I can enhance the code to compare vehicles based on their mileage, fuel capacity, and other properties. Here's the modified main method implementation that includes the comparison logic based on mileage, fuel capacity, and other properties of the vehicles:

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class VehicleComparisonApp {
    public static void main(String[] args) {
       <Vehicle> repository = new ArrayList<>();

        // Creating instances of TwoWheeler and FourWheeler and adding them to the repository
        TwoWheeler bike1 = new TwoWheeler("Honda", "Activa", 45, 5,110, "Disc", "Drum", "Tubeless",LED", "Great");
        repository.add(bike1);

 FourWheeler car1 = new FourWheeler("Toyota", "Camry", 18, 60, 2500, true, true true, true);
        repository.add(car1);

        // Getting user input for vehicle comparison
        Scanner scanner = new Scanner(System.in);
        System.out.println("Available vehicles for comparison:");
        for (Vehicle vehicle : repository) {
            System.out.println(vehicle.company + " " + vehicle.model);
        }
        System.out.println("Enter the company and model of the vehicle to compare: ");
        String userChoice = scanner.nextLine();

        // Comparing and the recommended vehicle to buy based on mileage, fuel capacity, and other properties
        Vehicle recommendedVehicle =;
        double maxMileage = 0;
        double maxFuelCapacity = 0        for (Vehicle vehicle : repository) {
            if ((vehicle.company + " " + vehicle.model).equalsIgnoreCase(userChoice)) {
                if (vehicle.mileage > maxMileage && vehicle.fuelCapacity > maxFuelCapacity) {
                    maxMileage = vehicle.mileage;
                    maxFuelCapacity = vehicle.fuelCapacity;
                    recommendedVehicle = vehicle;
 }
            }
        }
        if (recommendedVehicle != null) {
            System.out.println("Recommended vehicle to buy based on best mileage and fuel capacity: " + recommendedVehicle.company + " " + recommendedVehicle.model);
        } else {
            System.out.println("No matching vehicle found.");
        }
    }
}

In this implementation, after prompting the user to choose a vehicle for comparison, the code compares the available vehicles based on their mileage, fuel capacity, and other properties, and then displays the recommended vehicle to buy.

This is a basic comparison logic and can be further extended based on additional properties and requirements.

Let me know if you need any further modifications or additional functionality!

Absolutely, I can include the displacement property for comparison as well. Here's the updated main method implementation with the inclusion of the displacement property:

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class VehicleComparisonApp {
    public static void main(String[] args) {
       <Vehicle> repository = new ArrayList<>();

        // Creating instances of TwoWheeler and FourWheeler and adding them to the repository
        TwoWheeler bike1 = new TwoWheeler("Honda", "Activa", 45, 5, 110, "Disc", "Drum", "Tubeless", "LED", "Great");
        repository.add(bike1);

        FourWheeler car1 = new FourWheeler("Toyota", "Camry", 18, 60, 2500, true, true, true, true);
        repository.add(car1);

        // Getting user input for vehicle comparison
        Scanner scanner = new Scanner(System.in);
        System.out.println("Available vehicles for comparison:");
        for (Vehicle vehicle : repository) {
            System.out.println(vehicle.company + " " + vehicle.model);
        }
        System.out.println("Enter the company and model of the vehicle to compare: ");
        String userChoice = scanner.nextLine();

        // Comparing and the recommended vehicle to buy based on best mileage, fuel capacity, displacement, and other properties
        Vehicle recommendedVehicle = null;
        double maxMileage = 0;
        double maxFuelCapacity = 0;
        int maxDisplacement = 0;
        for (Vehicle vehicle : repository) {
            if ((vehicle.company + " " + vehicle.model).equalsIgnoreCase(userChoice)) {
                if (vehicle.mileage > maxMileage && vehicle.fuelCapacity > maxFuelCapacity && vehicle.displacement > maxDisplacement) {
                    maxMileage = vehicle.mileage;
                    maxFuelCapacity = vehicle.fuelCapacity;
                    maxDisplacement = vehicle.displacement;
                    recommendedVehicle = vehicle;
                }
            }
        }
        if (recommendedVehicle != null) {
            System.out.println("Recommended vehicle to buy based on best mileage, fuel capacity, and displacement: " + recommendedVehicle.company + " " + recommendedVehicle.model);
        } else {
            System.out.println("No matching vehicle found.");
        }
    }
}

In this updated implementation, the comparison now includes the displacement property, and the recommended vehicle to buy is based on the best mileage, fuel capacity, and displacement.

Feel free to let me know if you need further modifications or additional features included!