如何编写面向对象的程序以使用超类，子类和接口实例化对象和接口

在学校里，有人问我这个问题：

序言：在OOP中，当创建该类的对象时，该类被称为实例化。分析下面的图1，并将其用于回答以下问题。

使用继承和接口的概念，生成类，对象和/或接口的列表，指示：

一世。是基类，父类或超类。答案是动物类ii。是派生的，孩子的，子类。答案是鸟类，爬行动物和鱼类iii。是接口。答案是“不飞”或“会酸高”。用于实现继承的关键字。答案是“扩展” v。用于实现接口的关键字。对此的答案是工具。

b）使用上面的答案，创建一个Java OOP程序，该程序实例化所需的对象并调用其相关方法。

对于这个问题，我能够编写以下代码：

public class Animal {
public class Animal {

//  Properties gender, age, weight
  public String gender;
  public String age;
  public String weight;

//  Constructor to inherit for other classes
  Animal(String gender, String age, String weight) {
    this.gender = gender;
    this.age = age;
    this.weight = weight;
  }

//  Methods to inherit
  public void sleep() {
    System.out.println("Animal can sleep");
  }

  public void move() {
    System.out.println("Animal can move");
  }

  public void eat() {
    System.out.println("Animal can eat");
  }

}


//Bird class inherits Animal
class Bird extends Animal {

  Bird(String gender, String age, String weight) {
    super(gender, age, weight);
  }
}

//Reptile Class inherits Animal
class Reptile extends Animal {

  Reptile(String gender, String age, String weight) {
    super(gender, age, weight);
  }

  public void leap() {
    System.out.println("Frog can leap");
  }

  Reptile Frog = new Reptile("Male", "1yr", "1kg");

}

//Fish Class inherits Animal
class Fish extends Animal {

  Fish(String gender, String age, String weight) {
    super(gender, age, weight);
  }

  Fish Shark = new Fish("Male", "3yrs", "150kg");
}


// Interface Fly
interface abilityToFly {
  public void Fly();

}


//Eagle inherits Bird and uses fly ability
class Eagle extends Bird implements  abilityToFly {

  Eagle(String gender, String age, String weight) {
    super("Female", "2yrs", "2kg");
  }



  @Override
  public void Fly() {
    System.out.println("It can Fly");
  }
}

//Chicken inherits Bird but does not have the ability to fly
class Chicken extends Bird implements abilityToFly {

  Chicken(String gender, String age, String weight) {
    super("Female", "1yr", "1kg");
  }

  @Override
  public void Fly() {
    System.out.println("It can not Fly");
  }
}

我不确定我是否以正确的方式完成此操作，是否有人可以为我更正此代码并告诉我如何实例化它。谢谢