Java实现小小图书馆

首先搭建好大体框架，一个图书类记录书本的信息。一个图书馆类进行图书的收集。
1.图书类

public class Book {
    private int id;//图书编号
    private String name;//书本名字
    private String author;//作者名字
    private double price;//图书价格

    public Book(int id, String name, String author, double price) {
        this.id = id;
        this.name = name;
        this.author = author;
        this.price = price;
    }

    @Override
    public String toString() {
        return "Book{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", author='" + author + '\'' +
                ", price=" + price +
                '}';
    }

2.图书馆类 进行图书的收集

public class Library {
    Set set = new HashSet();
    public void add(){
        Scanner scanner = new Scanner(System.in);
        boolean isFlag = true;
        while (isFlag){
            System.out.println("请输入图书的编号");
            int id = scanner.nextInt();
            System.out.println("请输入图书的名称");
            String name = scanner.next();
            System.out.println("请输入图书的作者");
            String author = scanner.next();
            System.out.println("请输入图书的价格");
            int price = scanner.nextInt();
            Book book = new Book(id,name,author,price);
            set.add(book);
            System.out.println("是否继续输入");
            String exit = scanner.next();
            System.out.println(exit);
            if (exit.equals("n")){
                System.out.println("ni");
                isFlag = false;
            }
        }
    }
    public void show(){
        for (Object o : set) {
            System.out.println(o);
        }
    }
    public static void main(String[] args) {
        Library library = new Library();
        library.add();
        library.show();

    }
}

实现效果：

个人评价：图书馆类功能较为简陋，实现的就是图书的收集，主要是为了测试hashset的的add功能。