猫和狗继承练习

1. 动物类（共性）

   package jc;
   
   public class Animal {
   	private String name;
   	private int age;
   	
   	public Animal() {}
   	
   	public Animal(String name,int age) {
   		this.name=name;
   		this.age=age;
   	}
   	public void setName(String name) {
   		this.name = name;
   	}
   	public String getName() {
   		return name;
   	}
   	public void setAge(int age) {
   		this.age = age;
   	}
   	public int getAge() {
   		return age;
   	}
   	public void eat() {
   		System.out.println("吃饭");
   	}
   }

2. 猫类

   package jc;
      
      public class Cat extends Animal{
      	public Cat() {}
      	
      	public Cat(String name,int age) {
      		super(name,age);
      	}
      	@Override
      	public void eat() {
      		// TODO 自动生成的方法存根
      		System.out.println("猫吃饭");
      	}
      }

3. 狗类

         package jc;
         
         public class Dog extends Animal{
         	public Dog() {	}
         	
         	public Dog(String name,int age) {
         		super(name,age);
         	}
         	@Override
         	public void eat() {
         		System.out.println("狗吃饭");
         	}
         
         }

4. 测试类

         package jc;
         
         public class Demo {
         	public static void main(String[] args) {
         		Animal a=new Cat();
         		a.setName("猫");
         		a.setAge(2);
         		System.out.println(a.getName()+","+a.getAge());
         		a.eat();
         		Animal b=new Cat("猫猫",3);
         		System.out.println(b.getName()+","+b.getAge());
         		b.eat();
         		
         	}
         
         }