package cn.just.shinelon.objectMemory;

/**

* 当初始化一个子类的时候，它首先会初始化父类，隐式调用父类无参构造器，如果子类重写了父类的方法它会调用子类的方法

* 然后初始化子类变量，执行非静态代码块（和代码的编写顺序一致），调用子类构造器

* @author shinelon

*/

public class Wolf extends Animal{

private String name="wolf";

private Double weight;

{

System.out.println(this.name);

}

public Wolf(String name,Double weight){

System.out.println("子类有参构造器");

this.name=name;

this.weight=weight;

}

@Override

public String getDesc() {

// TODO Auto-generated method stub

System.out.println("子类重写方法"); //①

return "name: "+name+" weight: "+weight; //④

}

public static void main(String[] args){

System.out.println(new Wolf("灰太狼",52.0)); //③

}

}

class Animal{

private String desc;

public Animal(){

//this在构造函数中的时候this代表正在初始化的java对象

//这里会调用子类中被重新的方法

this.desc=getDesc();

System.out.println("父类无参构造器"); //②

}

public String getDesc(){

return "Animal";

}

public String toString(){

return desc;

}

}