buycarbean.java

电子商务网站中实现分页的源代码

package com.monitor.bean;

import java.util.Arrays;
import java.util.HashMap;

public class BuyCarBean {
	private HashMap<Integer, BookBean> bookMap = new HashMap<Integer, BookBean>();
	
	public void addBook(BookBean book){
		if(bookMap.containsKey(new Integer(book.getBid()))){
			bookMap.get(new Integer(book.getBid())).setSum(bookMap.get(new Integer(book.getBid())).getSum()+1);
		}else{
			bookMap.put(new Integer(book.getBid()), book);
		}
	}
	
	public BookBean [] getAllBook(){
		Object [] obj = bookMap.values().toArray();
		BookBean [] books = new BookBean[obj.length];
		for(int i=0;i<books.length;i++){
			books[i] = (BookBean) obj[i];
		}
		Arrays.sort(books);
		return books;
	}
	
	public float getAllPrice(){
		BookBean [] books = this.getAllBook();
		float allprice=0.0f;
		for(int i=0;i<books.length;i++){
			allprice+=books[i].getAllprice();
		}
		return allprice;
	}
	
	public void deleteBook(Integer id){
		bookMap.remove(id);
	}
}