六、Java常用类：Object，Scanner

package com.shujia.day08.ketang;

import java.util.Objects;

/*        Cloneable中并没有什么方法和常量，只是作为允许克隆的标记，像这样的接口叫做标记接口

    克隆（拷贝）：
        浅拷贝：只是将对象整体复制一份，内部的引用地址共享一份
        深拷贝：所有的都复制一份

 */

class Demo{

}

class Dog implements Cloneable{
    String name;
    int age;
    Demo demo;

    public Dog() {
    }

    public Dog(String name, int age,Demo demo) {
        this.name = name;
        this.age = age;
        this.demo = demo;
    }

    @Override
    public String toString() {
        return "Dog{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", demo=" + demo +
                '}';
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Dog dog = (Dog) o;
        return age == dog.age && Objects.equals(name, dog.name);
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

public class ObjectDemo2 {
    public static void main(String[] args) throws Exception {
        Demo demo = new Demo();
        Dog d1 = new Dog("小黑", 3,demo);
        System.out.println(d1);
//        Dog d2 = new Dog("小黑", 3);
//        System.out.println(d1.equals(d2));
//
//        String s1 = new String("你好");
//        String s2 = new String("你好");
//        System.out.println(s1.equals(s2));

        Object o = d1.clone();
        System.out.println(o);
        System.out.println(d1==o);
    }
}