526互联

原型模式--Java实现

发布时间 2023-10-15 17:49:55作者: yesyes1

画类图

浅克隆：

深克隆：

具体代码实现

浅克隆具体代码：

//Vector.java
package org.example.design004;

import java.lang.reflect.Array;
import java.util.Arrays;

public class Vector implements Cloneable{
    public int[] getArray() {
        return array;
    }

    public void setArray(int[] array) {
        this.array = array;
    }

    public Attachment getAttachment() {
        return attachment;
    }

    public void setAttachment(Attachment attachment) {
        this.attachment = attachment;
    }

    private int[] array;

    private Attachment attachment=null;

    public Vector(){
        this.attachment=new Attachment();
    }

    public Object clone() throws CloneNotSupportedException {
        Vector clone=null;

        clone=(Vector) super.clone();

        return clone;
    }

    public void display(){
        System.out.println(Arrays.toString(array));
    }




}

//Attachment.java
package org.example.design004;

public class Attachment {
    public void download(){
        System.out.println("复制向量");
    }
}

//Client.java
package org.example.design004;

public class Client {
    public static void main(String[] args) throws CloneNotSupportedException {
        Vector vector,copyVector;
        vector=new Vector();
        int[] arr={1,2,3,4};
        vector.setArray(arr);

        System.out.println("浅克隆复制：");

        copyVector=(Vector) vector.clone();

        System.out.print("vector：");
        vector.display();
        System.out.print("copyVector：");
        copyVector.display();

        System.out.println("vector==copyVector?");
        System.out.println(vector.getAttachment()==copyVector.getAttachment());


    }
}

深克隆具体代码：

//Vector.java
package org.example.design004;

import java.io.*;
import java.lang.reflect.Array;
import java.util.Arrays;

public class Vector implements Serializable{
    public int[] getArray() {
        return array;
    }

    public void setArray(int[] array) {
        this.array = array;
    }

    public Attachment getAttachment() {
        return attachment;
    }

    public void setAttachment(Attachment attachment) {
        this.attachment = attachment;
    }

    private int[] array;

    private Attachment attachment=null;

    public Vector(){
        this.attachment=new Attachment();
    }

    public Object deepClone() throws IOException, ClassNotFoundException {
        ByteArrayOutputStream bao=new ByteArrayOutputStream();
        ObjectOutputStream oos=new ObjectOutputStream(bao);
        oos.writeObject(this);

        ByteArrayInputStream bai=new ByteArrayInputStream(bao.toByteArray());
        ObjectInputStream ois=new ObjectInputStream(bai);
        return (ois.readObject());
    }

    public void display(){
        System.out.println(Arrays.toString(array));
    }




}

//Attachment.java
package org.example.design004;

import java.io.Serializable;

public class Attachment implements Serializable {
    public void download(){
        System.out.println("复制向量");
    }
}

//Client.java
package org.example.design004;

import java.io.IOException;

public class Client {
    public static void main(String[] args) throws CloneNotSupportedException, IOException, ClassNotFoundException {
        Vector vector,copyVector;
        vector=new Vector();
        int[] arr={1,2,3,4};
        vector.setArray(arr);

        System.out.println("深克隆复制：");

        copyVector=(Vector) vector.deepClone();

        System.out.print("vector：");
        vector.display();
        System.out.print("copyVector：");
        copyVector.display();

        System.out.println("vector==copyVector?");
        System.out.println(vector.getAttachment()==copyVector.getAttachment());


    }
}