Test Class

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class Vehcle{
    public void start() {
        System.out.println("The car is starting.....");
    }
    
    public void stop() {
        System.out.println("The car is stoped.");
    }
}
class Bmw extends Vehcle {
    public void greeting() {
        System.out.println("Greetings from BMW!");
    }
}

class Main {
  public static void main(String[] args) {
    Vehcle vehcle = new Vehcle();
    Vehcle bmw = new Bmw();
    bmw.stop();
  }
}