Java学习之给定如图所示的Animal类及其子类的继承关系UML图。编写代码实现这些类。

桃扇骨 2023-01-13 06:18 147阅读 0赞

**一、案例介绍：**  
给定如图所示的Animal类及其子类的继承关系UML图。编写代码实现这些类。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NzA2MjkwNw_size_16_color_FFFFFF_t_70_pic_center]

**二、案例代码：**

public class AnimalTest {
        
    	public static void main(String[] args) {
        
    		Animal animal = new Animal();
    		animal.eat();
    		Bird bird = new Bird();
    		bird.fly();
    		Fish fish = new Fish();
    		fish.swim();
    		Dog dog = new Dog();
    		dog.walk();
    	}
    }
    class Animal{
        
    	private double weight;
    	public void eat() {
        
    	 System.out. println("I can eat anything.");
    	}
    }
    class Bird extends Animal{
        
    	public int numberOfwings;
    		public void fly(){
        
    		 System.out. println( "I can fly.");
    	}
    }
    class Fish extends Animal{
        
    	public int numberOfFins;
    		public void swim(){
        
    		 System.out. println( "I can swim.");
    	}
    }
    class Dog extends Animal{
        
    	public int numberOfLegs;
    		public void walk(){
        
    		 System. out. println( "I can walk.");
    	}
    }

**三、案例运行图：**  
![在这里插入图片描述][20210416155417629.png_pic_center]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NzA2MjkwNw_size_16_color_FFFFFF_t_70_pic_center]: /images/20221022/8edb3f0b67ff4fe6bd51dc6fa4d330df.png
[20210416155417629.png_pic_center]: /images/20221022/bafbe4d07d8e42dda1c33e026487f6d6.png