Question

能用JAVA编写一个自动贩卖机的程序吗？

Answer 1

import java.util.Scanner;

public class Shop
{
private String coffee="咖啡";
private String coke="可乐";
private String tea="茶";
private double coffeeprice=2.00;
private double cokeprice=3.00;
private double teaprice=5;
private double price=0.0;
public Shop()
{
}
public void getName(int i)
{
if(i==1)
{
System.out.println("你选择的是咖啡");
}

if(i==2)
{
System.out.println("你选择的是可乐");
}

if(i==3)
{
System.out.println("你选择的是茶");
}
}
public double getShopping(int i,double p)
{
if(i==1)
{
if(p<coffeeprice)
{
System.out.println("您的钱不够买此商品");
}
else
{
price=p-coffeeprice;
}
}

if(i==2)
{
if(p<cokeprice)
{
System.out.println("您的钱不够买此商品");
}
else
{
price=p-cokeprice;
}
}

if(i==3)
{
if(p<teaprice)
{
System.out.println("您的钱不够买此商品");
}
else
{
price=p-teaprice;
}
}

return price;
}

public static void main(String[] args)
{
Shop shop=new Shop();
try
{
System.out.println("请选择你想要的商品\n 1.咖啡 2.可乐 3.茶");
Scanner si=new Scanner(System.in);
int i=si.nextInt();
System.out.println(" ");
if(i>3||i<1)
{
System.out.println("没有此产品");
}
else
{
shop.getName(i);
System.out.println(" ");
System.out.print("请付账:");
Scanner sp=new Scanner(System.in);
double p=sp.nextDouble();
System.out.println(" ");
if(shop.getShopping(i,p)!=0.0)
{
System.out.println("找你的钱："+shop.getShopping(i,p));
}
}
}
catch(Exception ex)
{
System.out.println("请正确输入!");
}
}
}