原型模式(2)-克隆羊

原型模式-基本介绍

基本介绍

1. 原型模式(Prototype模式)是指:用原型实例指定创建对象的种类,并且通过拷贝这些原型,创建新的对象
2. 原型模式是一种创建型设计模式,允许一个对象再创建另外一个可定制的对象,无需知道如何创建的细节
3. 工作原理是:通过将一个原型对象传给那个要发动创建的对象,这个要发动创建的对象通过请求原型拷贝它们自己来实施创建,即对象.clone()
4. 形象的理解:孙大圣拔出猴毛,变出其它孙大圣

package com.young.prototype.improve;

/**
 * @author Shaw_Young
 * @date 2020/10/5 22:45
 */
public class Sheep implements Cloneable {

    private String name;
    private int age;
    private String color;

    public Sheep(String name, int age, String color) {
        this.name = name;
        this.age = age;
        this.color = color;
    }

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    @Override
    public String toString() {
        return "Sheep{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", color='" + color + '\'' +
                '}';
    }

    /**
     * 克隆该实例,使用默认的clone方法来完成
     */
    @Override
    protected Object clone() {
        Sheep sheep = null;
        try {
            sheep = (Sheep) super.clone();
        } catch (Exception e) {
            System.out.println(e.getMessage());
        }
        return sheep;
    }
}

package com.young.prototype.improve;

/**
 * @author Shaw_Young
 * @date 2020/10/5 23:15
 */
public class Client {

    public static void main(String[] args) {
        Sheep sheep = new Sheep("tom", 1, "白色");
        Sheep sheep1 = (Sheep) sheep.clone();
        Sheep sheep2 = (Sheep) sheep.clone();
        Sheep sheep3 = (Sheep) sheep.clone();
        Sheep sheep4 = (Sheep) sheep.clone();
        Sheep sheep5 = (Sheep) sheep.clone();
        System.out.println(sheep);
        System.out.println(sheep1);
        System.out.println(sheep2);
        System.out.println(sheep3);
        System.out.println(sheep4);
        System.out.println(sheep5);
    }

}