E3_Vehicle_Interface

// Vehicle interface
interface Vehicle {
    String name = "Unknown";
    int maxPassengers = 0;
    double maxSpeed = 0;

    void displayInfo();
}

// LandVehicle interface extending Vehicle
interface LandVehicle extends Vehicle {
    int numWheels = 0;

    void drive();
}

// SeaVehicle interface extending Vehicle
interface SeaVehicle extends Vehicle {
    double displacement = 0;

    void launch();
}

// Car class implementing LandVehicle
class Car implements LandVehicle {
    String name;
    int maxPassengers;
    double maxSpeed;
    int numWheels;

    public Car(String name, int maxPassengers, double maxSpeed, int numWheels) {
        this.name = name;
        this.maxPassengers = maxPassengers;
        this.maxSpeed = maxSpeed;
        this.numWheels = numWheels;
    }

    @Override
    public void drive() {
        System.out.println("Car is driving.");
    }

    @Override
    public void displayInfo() {
        System.out.println("Car Information - Name: " + name + ", Max Passengers: " + maxPassengers + ", Max Speed: " + maxSpeed + ", Number of Wheels: " + numWheels);
    }
}

// HoverCraft class implementing LandVehicle and SeaVehicle
class HoverCraft implements LandVehicle, SeaVehicle {
    String name;
    int maxPassengers;
    double maxSpeed;
    int numWheels;
    double displacement;

    public HoverCraft(String name, int maxPassengers, double maxSpeed, int numWheels, double displacement) {
        this.name = name;
        this.maxPassengers = maxPassengers;
        this.maxSpeed = maxSpeed;
        this.numWheels = numWheels;
        this.displacement = displacement;
    }

    @Override
    public void drive() {
        System.out.println("HoverCraft is driving on land.");
    }

    @Override
    public void launch() {
        System.out.println("HoverCraft is launching on water.");
    }

    public void enterLand() {
        System.out.println("HoverCraft enters land.");
    }

    public void enterSea() {
        System.out.println("HoverCraft enters sea.");
    }

    @Override
    public void displayInfo() {
        System.out.println("HoverCraft Information - Name: " + name + ", Max Passengers: " + maxPassengers + ", Max Speed: " + maxSpeed + ", Number of Wheels: " + numWheels + ", Displacement: " + displacement);
    }
}

// Ship class implementing SeaVehicle
class Ship implements SeaVehicle {
    String name;
    int maxPassengers;
    double maxSpeed;
    double displacement;

    public Ship(String name, int maxPassengers, double maxSpeed, double displacement) {
        this.name = name;
        this.maxPassengers = maxPassengers;
        this.maxSpeed = maxSpeed;
        this.displacement = displacement;
    }

    @Override
    public void launch() {
        System.out.println("Ship is launching on water.");
    }

    @Override
    public void displayInfo() {
        System.out.println("Ship Information - Name: " + name + ", Max Passengers: " + maxPassengers + ", Max Speed: " + maxSpeed + ", Displacement: " + displacement);
    }
}

public class VehicleDemo {
    public static void main(String[] args) {
        Car car = new Car("Car-1", 4, 120.0, 4);
        HoverCraft hoverCraft = new HoverCraft("HoverCraft-1", 10, 80.0, 4, 250.0);
        Ship ship = new Ship("Ship-1", 100, 40.0, 5000.0);

        car.displayInfo();
        car.drive();

        hoverCraft.displayInfo();
        hoverCraft.drive();
        hoverCraft.launch();
        hoverCraft.enterLand();
        hoverCraft.enterSea();

        ship.displayInfo();
        ship.launch();
    }
}