interface Vehicle {
  // Constant
  public static final int MAX_SPEED = 200;
  // Abstract method
  public void start();
  // Default method
  public default void stop() {
    System.out.println(“Vehicle stopped”);
  }
  // Static method
  public static void honk() {
    System.out.println(“Beep beep”);
  }
  // A nested type
  enum Color {
    RED, GREEN, BLUE;
  }
}
// Car implements Vehicle interface
class Car implements Vehicle {
  // A field
  private Color color;
  // A constructor
  public Car(Color color) {
    this.color = color;
  }
  // Implement the abstract method
  public void start() {
    System.out.println(“Car started”);
  }
  // Override the default method
  public void stop() {
    System.out.println(“Car stopped”);
  }
  // A method to get the color
  public Color getColor() {
    return color;
  }
}
// A class to test the interface and the class
class Main {
  public static void main(String[] args) {
    // Create a car object
    Car car = new Car(Vehicle.Color.RED);
    // Call the methods defined by the interface
    car.start();
    car.stop();
    Vehicle.honk();
    // Access the static constant and the nested type
    System.out.println(“The max speed is ” + Vehicle.MAX_SPEED);
    System.out.println(“The car color is ” + car.getColor());
  }
}

interface IVehicle
{
  // A static constant
  public static readonly int MAX_SPEED = 200;
  // An abstract method
  void Start();
  // A default method
  public virtual void Stop()
  {
    Console.WriteLine(“Vehicle stopped”);
  }
  // A static method
  public static void Honk()
  {
    Console.WriteLine(“Beep beep”);
  }
  // A nested type
  enum Color
  {
    Red, Green, Blue;
  }
}
// A class that implements the interface
class Car : IVehicle
{
  // A field
  private Color color;
  // A constructor
  public Car(Color color)
  {
    this.color = color;
  }
  // Implement the abstract method
  public void Start()
  {
    Console.WriteLine(“Car started”);
  }
  // Override the default method
  public override void Stop()
  {
    Console.WriteLine(“Car stopped”);
  }
  // A method to get the color
  public Color GetColor()
  {
    return color;
  }
}
// A class to test the interface and the class
class Program
{
  public static void Main(string[] args)
  {
    // Create a car object
    Car car = new Car(IVehicle.Color.Red);
    // Call the methods defined by the interface
    car.Start();
    car.Stop();
    IVehicle.Honk();
    // Access the static constant and the nested type
    Console.WriteLine(“The max speed is ” + IVehicle.MAX_SPEED);
    Console.WriteLine(“The car color is ” + car.GetColor());
  }
}