开发一个表示图书的Book类

//Book类型
public class Book {
	/*
	 * 1.开发一个表示图书的Book类
	 * 该类具有私有的实例属性：编号、名称、作者、价格、出版社、出版日期等信息
	 * 并且该类为上述属性提供公有的get和set方法，同时该类还具有如下公有的方法:
		a)以一个字符串的形式获得本书的编号、名称、作者和价格等信息。
		b)调整价格，以价格的变化量为参数。
	 * */
	private int bookNumber;
	private String bookName;
	private String bookAuthor;
	private double price;
	private String publishHouse;
	private String bookDate;
	
	
	public void setbookNumber(int _bookNumber){
		bookNumber=_bookNumber;
	}
	public int getBookNumber() {
		return bookNumber;
	}
	
	
	
	public void setBookName(String _bookName) {
		bookName=_bookName;
	}
	public String getBookName() {
		return bookName;
	}
	
	
	public void setPrice(double _price) {
		price = _price;
	}
	public void addPrice(double _price) {
		price = _price+price;
	}
	public void lessPrice(double _price) {
		price = price-_price;
	}
	public double getPrice() {
		return price;
	}
	
	
	
	public void setBookAuthor(String _bookAuthor) {
		bookAuthor = _bookAuthor;
	}
	public String getBookAuthor() {
		return bookAuthor;
	}
	
	
	public void setBookDate(String _bookDate) {
		bookDate = _bookDate;
	}
	public String getBookDate() {
		return bookDate;
	}
	
	
	public void setPublishHouse(String _publishHouse) {
		this.publishHouse = _publishHouse;
	}
	public String getPublishHouse() {
		return publishHouse;
	}
	
	
	public String getInfo(){
		
		return "书的编号:"+bookNumber+"\t书的名称："+bookName+"\t书的作者:"+bookAuthor+"\t书的价格:"+price+"\t书的出版社:"+publishHouse+"\t出版日期:"+bookDate;
	}
	
	
}

public class BookTest {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Book a=new Book();
		a.setBookName("水浒传");
		a.setBookAuthor("施耐庵");
		a.setBookDate("明朝");
		a.setPublishHouse("中国人民出版社");
		a.setPrice(100);
		a.addPrice(100);
		a.setbookNumber(00001);
		System.out.println(a.getInfo());
	
		
		
		Book b=new Book();
		b.setBookName("三国演义");
		b.setBookAuthor("罗贯中");
		b.setBookDate("清朝");
		b.setPublishHouse("中国人民出版社");
		b.setPrice(100);
		b.lessPrice(50);
		b.setbookNumber(00002);
		System.out.println(b.getInfo());
	
	
		Book c=new Book();
		c.setBookName("长安十二时辰");
		c.setBookAuthor("马伯庸");
		c.setBookDate("当代");
		c.setPublishHouse("中国人民出版社");
		c.setPrice(100);
		c.addPrice(100);
		c.lessPrice(150);
		c.setbookNumber(00003);
		System.out.println(c.getInfo());
	
	}
	

}