2种方法实现java对象的深拷贝

<pre class="java"><span style="font-size:14px;">/**

• 深拷贝和浅拷贝的测试
  */
  //测试类1
  class Person implements Cloneable{
  String name;
  int age;
  Person(String name,int age){
  this.name=name;
  this.age=age;
  }
  @Override
  public Object clone() {
  try{
  return super.clone();
  }catch(CloneNotSupportedException e){
  return null;
  }
  }
  }
  //测试类2

class Animal implements Cloneable{
Person host;//主人
int age;//年纪
Animal(Person person,int age){
this.host=person;
this.age=age;
}
@Override
public Object clone(){
try{
Animal animal=(Animal) super.clone();
animal.host=(Person)host.clone();//深拷贝处理
return animal;
}catch (CloneNotSupportedException e){
return null;
}
}
}

//测试
public class Main{
public static void main(String[] args) {
Person person1=new Person("cxh",26);
Person person2=(Person)person1.clone();
System.out.println("----------------浅拷贝--------------");
//测试Object的clone方法为浅拷贝
//String类用==测试内存地址是否一致
System.out.println("person1和person2的name内存地址是否相同:"+(person1.name==person2.name));

            System.out.println("----------------深拷贝--------------");
            //重写Object的clone方法,实现深拷贝
            //还是用==查看两个对象的内存地址是否相等来确定是否为两个对象,如果是两个内存地址,那么就是深拷贝
            Animal animal1=new Animal(new Person("cxh",26),3);
            Animal animal2=(Animal) animal1.clone();
            System.out.println("animal1和animal2的host内存地址是否相同:"+(animal1.host==animal2.host));
    }

}
<span style="font-size:14px;">
输出：

Process finished with exit code 0