我如何让我的子类在它未来的父类中显示？

// 父类
abstract class Animal {
    abstract void makeSound();

    void display() {
        System.out.println("This is an animal.");
    }
}

// 子类
class Dog extends Animal {
    @Override
    void makeSound() {
        System.out.println("Bark");
    }

    @Override
    void display() {
        super.display(); // 调用父类的display方法
        System.out.println("This is a dog.");
    }
}

public class Main {
    public static void main(String[] args) {
        Dog myDog = new Dog();
        myDog.display(); // 输出: This is an animal. This is a dog.
        myDog.makeSound(); // 输出: Bark
    }
}

class Dog extends Animal {
    @Override
    void makeSound() {
        System.out.println("Bark");
    }

    @Override
    void display() {
        super.display(); // 确保调用了父类的display方法
        System.out.println("This is a dog.");
    }
}