将原型模式和建造者模式结合起来耍一耍

/**
 * @author ：nx014924
 * @date ：Created in 5/30/2021 2:45 PM
 * @description：
 * @modified By：
 * @version:
 */
public class Phone implements Cloneable{
    private String name;
    private int price;
    private Factory factory;

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

    public String toString(){
        return new StringBuilder()
                .append(" name=")
                .append(this.name)
                .append(" price=")
                .append(this.price)
                .append(" factory name=")
                .append(this.factory.getName())
                .append(" engineer name=")
                .append(this.factory.getEngineer().getName())
                .append(" engineer age=")
                .append(this.factory.getEngineer().getAge())
                .toString();
    }

    private Phone(Builder builder){
        this.name = builder.name;
        this.price = builder.price;
        this.factory = builder.factory;
    }

    public static class Builder{
        private String name;
        private int price;
        private Factory factory;

        public static Builder getInstance(){
            return new Builder();
        }

        public Builder setName(String name){
            this.name = name;
            return this;
        }
        public Builder setPrice(int price){
            this.price = price;
            return this;
        }
        public Builder setFactory(Factory factory){
            this.factory = factory;
            return this;
        }

        public Phone build(){
            return new Phone(this);
        }
    }
    //省略了getter、setter          
}

/**
 * @author ：nx014924
 * @date ：Created in 5/30/2021 2:45 PM
 * @description：
 * @modified By：
 * @version:
 */
public class Factory implements Cloneable{
    private String name;
    private Engineer engineer;

    protected Factory clone() throws CloneNotSupportedException {
        //手动实现下clone方法
        Factory factory = new Factory();
        if (this.name != null)
            factory.name = this.name;
        if (this.engineer != null)
            factory.engineer = (Engineer) this.engineer.clone();
        return factory;
    }

    public Factory(){}

    public Factory(String name, Engineer engineer){
        this.name = name;
        this.engineer = engineer;
    }
    //省略了getter、setter  
}

/**
 * @author ：nx014924
 * @date ：Created in 5/30/2021 2:46 PM
 * @description：
 * @modified By：
 * @version:
 */
public class Engineer implements Cloneable{
    private String name;
    private int age;

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

    public Engineer(String name, int age){
        this.name = name;
        this.age = age;
    }
    //省略了getter、setter
}

/**
 * @author ：nx014924
 * @date ：Created in 5/30/2021 2:46 PM
 * @description：
 * @modified By：
 * @version:
 */
public class Start {

    public static void main(String[] args) throws CloneNotSupportedException {
        Engineer engineer = new Engineer("雷军", 20);
        Factory factory = new Factory("小米厂", engineer);
        Phone phone1 = Phone.Builder
                .getInstance()
                .setName("小米")
                .setPrice(1999)
                .setFactory(factory)
                .build();
        System.out.println("phone1-----" + phone1.toString());//phone1----- name=小米 price=1999 factory name=小米厂 engineer name=雷军 engineer age=20
        Phone phone2 = (Phone) phone1.clone();
        phone2.setName("红米");
        System.out.println("phone2-----" + phone2.toString());//phone2----- name=红米 price=1999 factory name=小米厂 engineer name=雷军 engineer age=20
    }
}