java设计模式Ctrl C和Ctrl V的原型模式详解

/**
 * @author：TianLong
 * @date：2022/10/18 19:47
 * @detail：原型模式 具体实现类
 */
class Book implements Cloneable{
    public ArrayList<String> articles = new ArrayList<>();
    public String author = "";
    public int price = 0;
    public String publishers = "";
    public Book(ArrayList<String> articles, String author, int price, String publishers) {
        this.articles = articles;
        this.author = author;
        this.price = price;
        this.publishers = publishers;
    }
    @Override
    public Book clone() {
        Book book = null;
        try {
          book = (Book) super.clone();
          // 引用数据类型，需实现深拷贝
          book.articles = (ArrayList<String>) this.articles.clone();
        } catch (CloneNotSupportedException e) {
            throw new RuntimeException(e);
        }
        return book;
    }
    @Override
    public String toString() {
        return "Book{" +
                "articles=" + articles +
                ", author='" + author + '\'' +
                ", price=" + price +
                ", publishers='" + publishers + '\'' +
                '}';
    }
}

/**
 * @author：TianLong
 * @date：2022/10/18 19:52
 * @detail：客户端
 */
class Client {
    public static void main(String[] args) {
        ArrayList<String>arrayList=new ArrayList<>();
        arrayList.add("丑小鸭");
        arrayList.add("白雪公主");
        arrayList.add("小红帽");
        Book book = new Book(arrayList,"安徒生",20,"人民出版社");
        Book cloneBook = book.clone();
        // 引用数据类型
        book.articles.add("大闹天宫");
        // 数据输出
        System.out.println(book.toString());
        System.out.println(cloneBook.toString());
    }
}