store2.java

JAVA源码

import java.util.*;
import java.io.*;
class Goods
{
	String name;
	float price=0.0f;
	Goods(String name,float price)
	{
		this.name=name;
		this.price=price;
	}
	public void setName(String name)
	{
		this.name=name;
	}
	public String getName()
	{
		return name;
	}
	public void setPrice(float price) 
	{
		this.price =price;
	}
	public float getPrice()
	{
		return price;
	}

	public String toString()
	{
          return name+"________"+price;
	}
}
class Basket
{
	// ArrayList<Goods> goodslist;
	ArrayList<Goods> goodslist =new ArrayList();//


	public void addGoods(Goods goods)
	{
		goodslist.add(goods);
	}
	public ArrayList<Goods> getAllGoods()
	{
		return goodslist;
	}
	public boolean isEmpty()
	{
		return goodslist.isEmpty();
	}
	public void clear()
	{
		goodslist.clear();
	}
	public float getTotlePrice()
	{
		float sum=0.0f;
		for (int i=0;i<goodslist.size() ; i++)
		{
			sum+=goodslist.get(i).price;
		}
		return sum;
	} 

}
public class Store
{
	//static  Goods[] GOODS;
	//static Basket basket;
	static  Goods[] GOODS;//
	static Basket basket=new Basket() ;//
	//static final String MESSAGE_HEADER;
	//static final String MESSAGE_FOOTER;
	static boolean con;
	public static void exit()
	{	
	
	}
	public static void choiceGoods(int n)
	{
		System.out.println("You Have Selected:"+GOODS[n].getName()+"          "+GOODS[n].getPrice());
		System.out.println("Please Select A Number:");
	}
	public static void changeOut()
	{
		
		System.out.println("-----------------------CHECKOUT------------------------------");
		
		for (int i=0;i<basket.goodslist.size() ;i++ )
		{
			System.out.println("   "+basket.getAllGoods().get(i).name+"          "+basket.getAllGoods().get(i).price);
		}
		System.out.println("-------------------------------------------------------------");
		System.out.println("TOTLE："+basket.getTotlePrice());
	}
	public static void invalidinput()
	{
		
		//if (i<0 & i>GOODS.length)
		//{
			System.out.println("输入错误，请输入所列商品的代码！");
			//con=false;
			con=true;
		//}
	}
	public static void addGoods(int choice)
	{
		basket.addGoods(GOODS[choice]);
	}
	public static void printMenu()
	{
		System.out.println("-------------------------------------------------------------");
		System.out.println("        Welcome To Xiaofang Convenience Store     ");
		System.out.println("-------------------------------------------------------------");
	//	for (int i=1;i<=GOODS.length ;i++ )
	for (int i=1;i<=GOODS.length-1 ;i++ )
		{
			System.out.println("("+i+")"+"   "+GOODS[i].getName()+"          "+GOODS[i].getPrice());
		}
		System.out.println("("+0+")"+"   "+GOODS[0].getName());
		System.out.println("-------------------------------------------------------------");
		System.out.println("Please Select A Number:");
		System.out.println("-------------------------------------------------------------");
	}
	public static void main(String[] args) throws Exception
	{
		GOODS=new Goods[7];
		GOODS[0]=new Goods("Exit      ",0.0f);
		GOODS[1]=new Goods("Bread     ",1.0f);
		GOODS[2]=new Goods("Cocacole  ",1.0f);
		GOODS[3]=new Goods("Beer      ",1.0f);
		GOODS[4]=new Goods("Chacolate ",1.0f);
		GOODS[5]=new Goods("Pencil    ",0.5f);
		GOODS[6]=new Goods("Notebook  ",3.0f);
		String num;
		int number;
		boolean flag=false;
	    Store.printMenu();
       //	do
		    while(true)
		   {
					if (flag)
					{
						Store.printMenu();
						flag=true;
					}
					BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
					num = reader.readLine();
					
							try{
								number=Integer.parseInt(num);
								if(number==0)
									{
										break;
									}

									Store.addGoods(number);
					             	Store.choiceGoods(number);
							   }
						  
						   
						   catch (Exception e){ 
								System.out.println("-------------------------------------------------------------");
								Store.invalidinput();	
								if (con)
								{
									continue;
								}
							   }

					
					//else 
					//{
					//	Store.invalidinput(number);	
					//	if (con)
					//	{
							//continue;
					//	}
					
						
			}	
		
		//  while (number<=GOODS.length && number>0);
		   Store.changeOut();
	
	}
		
	
}