【JAVA面向对象编程】--- 探索子类如何继承父类

package Inherit;

class Animal {
	    public String name;
	    public int age;
	    public void eat() {
	        System.out.println(name+" 正在吃饭！");
	    }
}
	class Dog extends Animal{
	    public int count;
	    public void wangwang() {
        System.out.println(name+"正在叫！");
	    }
	}
	
	class Cat extends Animal{
	    public void miaomiao() {
	        System.out.println(name+ "正在苗苗叫！");
	    }
	}

	public class Test3 {
	    public static void main(String[] args) {
	        Dog dog = new Dog();
	        dog.name = "坦克";
	        dog.eat();
	        dog.wangwang();
	
	        Cat cat = new Cat();
	        cat.name = "小咪";
	        cat.eat();
	        cat.miaomiao();
	    }
	}

package Inherit;

class Ani {
	
	public String name;
	public int age;
	
	public void eat(){
		System.out.println(name + "吃饭!");
	}	
}

class HotDog extends Ani{
	//傻狗 是狗的属性
	public String silly; 
	public String name = "hello";
	
	public void houseGuard() {
		System.out.println(super.name+"正在看家护院!");
	}
}
//1.this 会优先访问子类自己的,若子类无 ,才会访问父类的.
//2.super 只是一个关键字,在代码层面上,能够达到易读效果,可以用来访问父类的内容及地址但是不能说成`是`引用

class Miao extends Ani{
	
	public void catchMouse(String name) {
		System.out.println(name + "抓杰瑞!");

	}
	
	
@Override
	public String toString() {
		return "miao 抓老鼠";
	}


	public Miao() {
		System.out.println(name + "抓老鼠!");
	}
	
	
	public Miao(String name) {
		this.name = name;
		System.out.println(name + "抓老鼠!");

	}
}

public class Test2{
	public static void main(String[] args) {
	Miao miao = new Miao();
	Miao miao1 = new Miao("喵喵");
	new Miao("Tom"). catchMouse("🐱");
	

	
	HotDog hotdog = new HotDog();
	System.out.println(hotdog);
	}
}

package Inherit;

class Animal {
	    public String name;
	    public int age;
	    
	    
//	    public Animal() {
//	    	
//	    }
	    
	    //父类调用含参的构造方法--->
	    //报错信息：Implicit super constructor Animal()
	    //is undefined for default constructor. 
	    //Must define an explicit constructor
	    public Animal(String name , int age) {
	    	this.name = name;
	    	this.age = age;
	    	System.out.println("Animal(String,int)");
	    }
	    
	    public void eat() {
	        System.out.println(name+" 正在吃饭！");
	    }
	    
	    public static void staticFunc() {
	    	
	    }
}

	class Dog extends Animal{
	    public int count;
	    
	    public void wangwang() {
        System.out.println(this.name+"正在叫！");
        //super.eat();--->利用super调用父类方法
        staticFunc();
	    }
	    
	    
	    public Dog(String name , int age,int count) {
	    	//1.先帮助父类部分初始化  必须放到第一行
	    	super(name,age);
	    	//2.再初始化自己
	    	this.count = count; 
	    	System.out.println("Dog(String,int,int)");
	    }
	}
	
	class Cat extends Animal{
	    
		public Cat() {
			super("mmi", 10);
		}
		
		public Cat(String name,int age) {
			super(name,age);
		}
		
		
		public void miaomiao() {
	        System.out.println(name+ "正在苗苗叫！");
	    }
	}

	public class Test3 {
	    public static void main(String[] args) {
	        Dog dog = new Dog("hello",10,3);
	        dog.wangwang();

	}