Java/com/study/demo2/Animal.java

package com.study.demo2;

public abstract class Animal {
  protected String name;

  public Animal(String name) {
    this.name = name;
  }

  public abstract void makeSound();

  public abstract void move();
}

class Dog extends Animal {
  public Dog(String name) {
    super(name);
  }

  @Override
  public void makeSound() {
    System.out.println(name + " 汪汪叫");
  }

  @Override
  public void move() {
    System.out.println(name + " 跑动");
  }
}

class Bird extends Animal {
  public Bird(String name) {
    super(name);
  }

  @Override
  public void makeSound() {
    System.out.println(name + " 叽叽喳喳");
  }

  @Override
  public void move() {
    System.out.println(name + " 飞翔");
  }
}