实例 Java 继承 (扩展)

class Vehicle {

  protected String brand = "Ford";

  public void honk() {

    System.out.println("Tuut, tuut!");

  }

}

​

class Car extends Vehicle {

  private String modelName = "Mustang";

  public static void main(String[] args) {

    Car myFastCar = new Car();

    myFastCar.honk();

    System.out.println(myFastCar.brand + " " + myFastCar.modelName);

  }

}

​