原型模式

目的就是实现深复制

//实现Cloneable接口,不然调用clone()时抛出CloneNotSupportException
public class Person implements Cloneable {
    public String name;

    public Person(String name) {
        this.name = name;
    }

    @Override
    public Person clone() {
        Person person = null;
        try{
            person = (Person)super.clone();
        }catch(CloneNotSupportedException e) {
            e.printStackTrace();
        }
        return person;
    }
}

        Person yellow = new Person("小黄");
        Person oldJ = yellow.clone();
        oldJ.name="老将";
        Log.d("meee",getClass()+":\n"+"yellow:"+yellow.name);
        Log.d("meee",getClass()+":\n"+"oldJ:"+oldJ.name);

也可以自己创建ICloneable接口

public interface ICloneable {
    Object clone();
}
//实现类调用构造器实现复制过程