public Book(int id, String name, String author, String bookman, float price, int remainNum, int categoryId, String introduction, int onSaleNum, Date onSaleDate) {
		super();
		this.id = id;
		this.name = name;
		this.author = author;
		this.bookman = bookman;
		this.price = price;
		this.remainNum = remainNum;
		this.categoryId = categoryId;
		this.introduction = introduction;
		this.onSaleNum = onSaleNum;
		this.onSaleDate = onSaleDate;
	}