java: Prototype Pattern

 

/**
 * 版权所有 2022 涂聚文有限公司
 * 许可信息查看：
 * 描述：
 * 原始模型 Prototype Patterns
 * 历史版本： JDK 14.02
 * 2022-09-12 创建者 geovindu
 * 2022-09-12 添加 Lambda
 * 2022-09-12 修改：date
 * 接口类
 * 2022-09-12 修改者：Geovin Du
 * 生成API帮助文档的指令：
 *javadoc - -encoding Utf-8 -d apidoc PandaToClone.java
 *
 * */



package com.javapatterns.prototype;

import java.lang.Object.*;

public class PandaToClone implements Cloneable {

    private int height, weight, age;

    public PandaToClone (int height, int weight)
    {
        this.age = 0;
        this.weight = weight;
        this.height = height;
    }

    public void setAge(int age)
    {
        this.age = age;
    }
    public int getAge()
    {
        return age;
    }
    public int getHeight()
    {
        return height;
    }
    public int getWeight()
    {
        return weight;
    }

    public Object clone()
    {
        PandaToClone temp = new PandaToClone(height, weight);
        temp.setAge(age);

        return (Object) temp;
    }

}

　　

 

调用测试：

//原始模型
            thisPanda = new PandaToClone(15, 25);
            thisPanda.setAge(3);

            // Create the second object by cloning the first
            thatPanda = (PandaToClone) thisPanda.clone();

            // Now describe these objects on the system console :

            System.out.println(" Age of this panda : " + thisPanda.getAge());
            System.out.println("            height : " + thisPanda.getHeight());
            System.out.println("            weight : " + thisPanda.getWeight());
            System.out.println(" Age of that panda : " + thatPanda.getAge());
            System.out.println("            height : " + thatPanda.getHeight());
            System.out.println("            weight : " + thatPanda.getWeight());

　　

输出：

 Age of this panda : 3
            height : 15
            weight : 25
 Age of that panda : 3
            height : 15
            weight : 25

　　

/**
 * 版权所有 2022 涂聚文有限公司
 * 许可信息查看：
 * 描述：
 * 原始模型 Prototype Patterns
 * 历史版本： JDK 14.02
 * 2022-09-12 创建者 geovindu
 * 2022-09-12 添加 Lambda
 * 2022-09-12 修改：date
 * 接口类
 * 2022-09-12 修改者：Geovin Du
 * 生成API帮助文档的指令：
 *javadoc - -encoding Utf-8 -d apidoc Monkey.java
 *
 * */



package com.javapatterns.prototype;


import java.util.Date;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.IOException;
import java.io.OptionalDataException;
import java.io.Serializable;

/**
 * 大圣，猢狲
 *
 * */
public class Monkey implements Cloneable, Serializable{



    private int height;
    private int weight;

    private GoldRingedStaff staff;
    private Date birthDate;
    /**
     * 构造
     * */
    public Monkey()
    {
        this.birthDate = new Date();
        this.staff = new GoldRingedStaff();
    }

    /**
     *深克隆方法
     *
     * */
    public Object deepClone()
            throws IOException, OptionalDataException, ClassNotFoundException
    {
        //write to stream
        ByteArrayOutputStream bo = new ByteArrayOutputStream();
        ObjectOutputStream oo = new ObjectOutputStream(bo);
        oo.writeObject(this);

        //read from stream
        ByteArrayInputStream bi = new ByteArrayInputStream(bo.toByteArray());
        ObjectInputStream oi = new ObjectInputStream(bi);

        return (oi.readObject());
    }
    /**
     * 浅克隆方法
     * */
    public Object clone()
    {
        Monkey temp = null;
        try
        {
            temp = (Monkey) super.clone();
        }
        catch(CloneNotSupportedException e)
        {
            System.out.println("Clone failed");
        }
        finally
        {
            return temp;
        }
    }
    /**
     *
     * */
    public int getHeight()
    {
        return height;
    }
    /**
     *
     * */
    public void setHeight(int height)
    {
        this.height = height;
    }
    /**
     *
     * */
    public int getWeight()
    {
        return weight;
    }
    /**
     *
     * */
    public void setWeight(int weight)
    {
        this.weight = weight;
    }
    /**
     *
     * */
    public Date getBirthDate()
    {
        return birthDate;
    }
    /**
     *
     * */
    public void setBirthDate(Date birthDate)
    {
        this.birthDate = birthDate;
    }
    /**
     *金箍棒的取值方法
     * */
    public GoldRingedStaff getStaff()
    {
        return staff;
    }




}

　　

/**
 * 版权所有 2022 涂聚文有限公司
 * 许可信息查看：
 * 描述：
 * 原始模型 Prototype Patterns
 * 历史版本： JDK 14.02
 * 2022-09-12 创建者 geovindu
 * 2022-09-12 添加 Lambda
 * 2022-09-12 修改：date
 * 接口类
 * 2022-09-12 修改者：Geovin Du
 * 生成API帮助文档的指令：
 *javadoc - -encoding Utf-8 -d apidoc GoldRingedStaff.java
 *
 * */


package com.javapatterns.prototype;

import java.util.Date;
import java.io.Serializable;

/**
 * 金箍棒
 *
 * */
public class GoldRingedStaff  implements Cloneable, Serializable{

    private float height = 100.0F;
    private float diameter = 10.0F;
    /**
     *
     * */
    public GoldRingedStaff()
    {
        //write your code here
    }
    /**
     *
     * */
    public void grow()
    {
        this.diameter *= 2.0;
        this.height *= 2;
    }
    /**
     *
     * */
    public void shrink()
    {
        this.diameter /= 2;
        this.height /= 2;
    }
    /**
     *
     * */
    public void move()
    {
        //write your code for moving the staff
    }
    /**
     *
     * */
    public float getHeight()
    {
        return height;
    }
    /**
     *
     * */
    public void setHeight(float height)
    {
        this.height = height;
    }
    /**
     *
     * */
    public float getDiameter()
    {
        return diameter;
    }
    /**
     *
     * */
    public void setDiameter(float diameter)
    {
        this.diameter = diameter;
    }



}

　　

/**
 * 版权所有 2022 涂聚文有限公司
 * 许可信息查看：
 * 描述：
 * 原始模型 Prototype Patterns
 * 历史版本： JDK 14.02
 * 2022-09-12 创建者 geovindu
 * 2022-09-12 添加 Lambda
 * 2022-09-12 修改：date
 * 接口类
 * 2022-09-12 修改者：Geovin Du
 * 生成API帮助文档的指令：
 *javadoc - -encoding Utf-8 -d apidoc TheGreatestSage.java
 *
 * */


package com.javapatterns.prototype;


import java.util.Date;
import java.io.IOException;
import java.lang.ClassNotFoundException;

/**
 * 大圣
 * */
public class TheGreatestSage {


    private Monkey monkey = new Monkey();

    public TheGreatestSage()
    { }

    /**
     *
     *
     * */
    public void change() throws IOException, ClassNotFoundException
    {

        try {
            Monkey copyMonkey;

            for (int i = 0; i < 2000; i++) {
            }

            copyMonkey = (Monkey) monkey.deepClone();

            System.out.println("Monkey King's birth date=" + monkey.getBirthDate());
            System.out.println("Copy monkey's birth date=" + copyMonkey.getBirthDate());

            System.out.println("Monkey King == Copy Monkey? " + (monkey == copyMonkey));
            System.out.println("Monkey King's Staff == Copy Monkey's Staff? " +
                    (monkey.getStaff() == copyMonkey.getStaff()));
        }
        catch (ClassNotFoundException cex)
        {
            cex.printStackTrace();
        }
        catch(IOException ioException)
        {
            ioException.printStackTrace();
        }
    }

}

　　

调用测试：

 try
        {

            TheGreatestSage theGreatestSage=new TheGreatestSage();
            theGreatestSage.change();
        }
        catch (Exception exception)
        {
            exception.printStackTrace();
        }

　　

输出：

Monkey King's birth date=Fri Sep 16 22:08:46 CST 2022
Copy monkey's birth date=Fri Sep 16 22:08:46 CST 2022
Monkey King == Copy Monkey? false
Monkey King's Staff == Copy Monkey's Staff? false