传统拷贝

/**  
 * <p>Title: Sheep.java</p>  
 * <p>Description: </p>  
 * <p>Copyright:</p>  
 * <p>Company:</p>  
 * @author kansir  
 * @date 2019��8��15��  
 * @version 1.0  
 */  
package com.pro.prototype;

/**
 * @Description 
 * @author kansir
 * @version
 * @date 2019��8��15�� ����10:49:39
 */
public class Sheep {
    
	@Override
	public String toString() {
    
		return "Sheep [name=" + name + ", color=" + color + ", age=" + age + "]";
	}
	private String name;
	private String color;
	private int age;
	public String getName() {
    
		return name;
	}
	public void setName(String name) {
    
		this.name = name;
	}
	public String getColor() {
    
		return color;
	}
	public void setColor(String color) {
    
		this.color = color;
	}
	public Sheep(String name, String color, int age) {
    
		super();
		this.name = name;
		this.color = color;
		this.age = age;
	}
	public int getAge() {
    
		return age;
	}
	public void setAge(int age) {
    
		this.age = age;
	}
}

/**  
 * <p>Title: Client.java</p>  
 * <p>Description: </p>  
 * <p>Copyright:</p>  
 * <p>Company:</p>  
 * @author kansir  
 * @date 2019��8��15��  
 * @version 1.0  
 */
package com.pro.prototype;

/**
 * @Description
 * @author kansir
 * @version
 * @date 2019��8��15�� ����10:51:27
 */
public class Client {
    
	public static void main(String[] args) {
    
		//��ͳ����
		Sheep sheep=new Sheep("tom", "��ɫ", 1);
		
		Sheep sheep2=new Sheep("tom", "��ɫ", 1);
		Sheep sheep3=new Sheep("tom", "��ɫ", 1);
		Sheep sheep4=new Sheep("tom", "��ɫ", 1);
		
		System.out.println(sheep2);
		System.out.println(sheep3);
		System.out.println(sheep4);
		
		
	}
}

原型模式

package com.pro.prototype.improve;

/**
 * 
* @ClassName: Sheep 
* @Description: TODO(这里用一句话描述这个类的作用) 
* @author kansir
* @date 2019年8月17日 下午9:48:45 
*
 */
public class Sheep implements Cloneable{
    
	private String name;
	private String color;
	public Sheep getFriend() {
    
        return friend;
    }
    public void setFriend(Sheep friend) {
    
        this.friend = friend;
    }
    private int age;
	public Sheep friend; //克隆时,对象类型如何处理
	public String getName() {
    
		return name;
	}
	public void setName(String name) {
    
		this.name = name;
	}
	public String getColor() {
    
		return color;
	}
	public void setColor(String color) {
    
		this.color = color;
	}
	public Sheep(String name, String color, int age) {
    
		super();
		this.name = name;
		this.color = color;
		this.age = age;
	}
	
	public int getAge() {
    
		return age;
	}
	public void setAge(int age) {
    
		this.age = age;
	}
	
	@Override
	public String toString() {
    
		return "Sheep [name=" + name + ", color=" + color + ", age=" + age + "]";
	}
	
	@Override
	protected Object clone() {
    
		
		Sheep sheep=null;
		
		try {
    
			
			sheep=(Sheep) super.clone();
			return sheep;
		
		} catch (CloneNotSupportedException e) {
    
			
			e.printStackTrace();
		}
		
		return null;
	}
    public Sheep() {
    
        super();
    }	
}


/**  
 * <p>Title: Client.java</p>  
 * <p>Description: </p>  
 * <p>Copyright:</p>  
 * <p>Company:</p>  
 * @author kansir  
 * @date 2019��8��15��  
 * @version 1.0  
 */
package com.pro.prototype.improve;

public class Client {
    
    public static void main(String[] args) {
    
        Sheep sheep = new Sheep("tom", "白色", 1);
        Sheep sheep6 = new Sheep("jack", "黑色", 2);
        sheep.setFriend(sheep6);
        Sheep sheep2 = (Sheep) sheep.clone();
        Sheep sheep3 = (Sheep) sheep.clone();
        Sheep sheep4 = (Sheep) sheep.clone();
        Sheep sheep5 = (Sheep) sheep.clone();
        System.out.println(sheep2);
        System.out.println(sheep3);
        System.out.println(sheep4);
        System.out.println("sheep5 = " + sheep5 + "sheep6.friend" + sheep5.friend.hashCode());
        System.out.println("sheep5 = " + sheep6 + "sheep6" + sheep6.hashCode());
        
    }
}

package com.pro.prototype.deepclone;

public class Client {
    
    public static void main(String[] args) throws CloneNotSupportedException {
    
        DeepProtoType p = new DeepProtoType();
        p.setName("宋江");
        p.setDeepCloneableTarget(new DeepCloneableTarget("大牛", "牛奶"));
/*
        // 方式一 完成深拷贝

        DeepProtoType p2 = (DeepProtoType) p.clone();

        System.out.println("p.name" + p.getName() + "p.getDeepCloneableTarget().hashCode()"
                + p.getDeepCloneableTarget().hashCode());
        System.out.println("p2.name" + p2.getName() + "p2.getDeepCloneableTarget().hashCode()"
                + p2.getDeepCloneableTarget().hashCode());
*/        
        // 方式二  完成深拷贝

        DeepProtoType p2 = (DeepProtoType) p.deepClone();

        System.out.println("p.name" + p.getName() + "p.getDeepCloneableTarget().hashCode()"
                + p.getDeepCloneableTarget().hashCode());
        
        System.out.println("p2.name" + p2.getName() + "p2.getDeepCloneableTarget().hashCode()"
                + p2.getDeepCloneableTarget().hashCode());

        
    }
}
package com.pro.prototype.deepclone;

import java.io.Serializable;

public class DeepCloneableTarget implements Serializable, Cloneable {
    
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	private String cloneName;

	private String cloneClass;

    /**
     * 
     * <p>Title: </p> 
     * <p>Description: 构造器</p> 
     * @param cloneName
     * @param cloneClass
     */
	public DeepCloneableTarget(String cloneName, String cloneClass) {
    
		this.cloneName = cloneName;
		this.cloneClass = cloneClass;
	}

	/**
	 * 使用默认的克隆即可
	 */
	@Override
	protected Object clone() throws CloneNotSupportedException {
    
		return super.clone();
	}
}
package com.pro.prototype.deepclone;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class DeepProtoType implements Serializable, Cloneable {
    

    private String name;
    private DeepCloneableTarget deepCloneableTarget;

    public DeepProtoType() {
    
        super();
    }

    // 深拷贝,方式一 :使用clone方法

    @Override
    protected Object clone() throws CloneNotSupportedException {
    
        Object deep = null;
        // 完成对基本数据类型和属性的string的克隆
        deep = super.clone();

        // 对引用类型的属性进行单独处理
        DeepProtoType deepProtoType = (DeepProtoType) deep;

        deepProtoType.deepCloneableTarget = (DeepCloneableTarget) deepCloneableTarget.clone();

        return deep;
    }

    // 深拷贝,方式二:通过序列化实现(推荐使用)
    public Object deepClone() {
    
        // 创建流对象
        ByteArrayOutputStream bos = null;
        ObjectOutputStream oos = null;
        ByteArrayInputStream bis = null;
        ObjectInputStream ois = null;

        try {
    
            // 序列化
            bos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(bos);
            oos.writeObject(this);// 将当前对象以对象流的形式输出

            // 反序列化
            bis = new ByteArrayInputStream(bos.toByteArray());
            ois = new ObjectInputStream(bis);
           
            DeepProtoType copeObj = (DeepProtoType) ois.readObject();
            
            return copeObj;
        } catch (Exception e) {
    

            e.printStackTrace();
        }finally {
    
            try {
    
                bos.close();
                bis.close();
                oos.close();
                ois.close();
            } catch (Exception e2) {
    
                e2.printStackTrace();
            }
        }
        return null;

    }

    public String getName() {
    
        return name;
    }

    public void setName(String name) {
    
        this.name = name;
    }

    public DeepCloneableTarget getDeepCloneableTarget() {
    
        return deepCloneableTarget;
    }

    public void setDeepCloneableTarget(DeepCloneableTarget deepCloneableTarget) {
    
        this.deepCloneableTarget = deepCloneableTarget;
    }

}

注意事项及细节