java基础练习项目:吃货联盟

迈不过友情╰ 2022-05-27 05:43 207阅读 0赞

最开始看到题目是懵的，不知道怎么下手。等到后面理清的思维逻辑后，基本上也就直接填代码了。

大概流程是:先初始化这个题目里面所需要的变量，然后是用面向过程里的选择语句switch来提供用户选择的选项，在每个选项里设置方法，运用面向对象学到的基础内容来调用方法，具体代码如下:

public class FoodList \{//初始化食品清单  
String name;// 菜名  
double price;// 菜品价格  
int like;// 点赞数  
public String getName() \{  
return name;  
\}  
public void setName(String name) \{  
this.name = name;  
\}  
public double getPrice() \{  
return price;  
\}  
public void setPrice(double price) \{  
this.price = price;  
\}  
public int getLike() \{  
return like;  
\}  
public void setLike(int like) \{  
this.like = like;  
\}  
public FoodList(String name, double price,  int like) \{  
this.name = name;  
this.price = price;  
this.like = like;  
\}

public class ClientOrder \{//订餐人订餐时输入的信息  
String name;// 订餐人名称  
  
  
String dishMegs;// 所选菜品信息  
  
  
String times;// 送餐时间  
  
  
String addresses;// 送餐地址  
  
  
String states;// 订单状态  
  
  
double sumPrices;// 订单总金额  
  
  
public ClientOrder(String name, String dishMegs, String times, String addresses, String states, double sumPrices) \{  
super();  
this.name = name;  
this.dishMegs = dishMegs;  
this.times = times;  
this.addresses = addresses;  
this.states = states;  
this.sumPrices = sumPrices;  
\}  
  
public String getName() \{  
return name;  
\}  
  
  
public void setName(String name) \{  
this.name = name;  
\}  
  
  
public String getDishMegs() \{  
return dishMegs;  
\}  
  
  
public void setDishMegs(String dishMegs) \{  
this.dishMegs = dishMegs;  
\}  
  
  
public String getTimes() \{  
return times;  
\}  
  
  
public void setTimes(String times) \{  
this.times = times;  
\}  
  
  
public String getAddresses() \{  
return addresses;  
\}  
  
  
public void setAddresses(String addresses) \{  
this.addresses = addresses;  
\}  
  
  
public String getStates() \{  
return states;  
\}  
  
  
public void setStates(String states) \{  
this.states = states;  
\}  
  
  
public double getSumPrices() \{  
return sumPrices;  
\}  
  
  
public void setSumPrices(double sumPrices) \{  
this.sumPrices = sumPrices;  
\}  
  
\}

public class OrderingMgr \{//执行程序的具体方法  
Scanner input = new Scanner(System.in);  
FoodList\[\] food = new FoodList\[3\];  
ClientOrder\[\] orders=new ClientOrder\[4\];  
public void init() \{  
food\[0\] = new FoodList("红烧带鱼", 38.0, 0);  
food\[1\] = new FoodList("鱼香肉丝", 20.0, 0);  
food\[2\] = new FoodList("时令鲜蔬", 10.0, 0);// 初始化菜单  
  
  
\}  
  
  
public void orderMenu() \{  
System.out.println("欢迎使用“吃货联盟订餐系统”");  
System.out.println("\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*");  
System.out.println("1.查看菜单");  
System.out.println("2.查看餐袋");  
System.out.println("3.签收订单");  
System.out.println("4.删除订单");  
System.out.println("5.我要点赞");  
System.out.println("6.退出系统");  
System.out.println("\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*");  
System.out.println("请选择:");  
int choose=input.nextInt();  
switch (choose) \{  
case 1:  
// 点餐  
toOrder();  
back();  
break;  
case 2:  
// 查看  
lookOrder();  
back();  
break;  
case 3:  
// 签收订单  
sign();  
back();  
break;  
case 4:  
// 删除订单  
delectOrder();  
back();  
break;  
case 5:  
// 我要点赞  
like();  
back();  
break;  
case 6:  
System.out.println("谢谢使用，欢迎下次光临！");  
break;  
default:  
System.out.println("输入错误!");  
break;  
  
  
\}  
  
  
  
\}  
private void lookOrder() \{  
System.out.println("\*\*\*\*查看餐袋\*\*\*\*");  
System.out.println("序号\\t订餐人\\t餐品信息\\t\\t送餐日期\\t\\t送餐地址\\t\\t总金额\\t订单状态");  
for (int i = 0; i < orders.length; i++) \{  
if (orders\[i\] != null) \{  
                String states;  
                if (orders\[i\].states.equals("0")) \{  
states="已预订";  
\}else if (orders\[i\].states.equals("1")) \{  
states="已完成";  
\}else\{  
states="异常";  
\}  
System.out.println(i + 1 + "\\t" + orders\[i\].name + "\\t" + orders\[i\].dishMegs + "\\t" + orders\[i\].times+"日"  
\+ "\\t\\t" + orders\[i\].addresses + "\\t" + orders\[i\].sumPrices+"元" + "\\t" +states + "\\t");  
\}  
\}  
  
\}  
  
  
  
  
  
  
  
  
private void like() \{  
// TODO Auto-generated method stub  
System.out.println("\*\*\*\*我要点赞\*\*\*\*");  
System.out.println("序号\\t菜名\\t\\t单价\\t\\t点赞数");  
for (int i = 0; i < food.length; i++) \{  
if (food\[i\] != null) \{  
System.out.println(i + 1 + "\\t" + food\[i\].name + "\\t\\t" + food\[i\].price + "元\\t\\t" + food\[i\].like);  
\}  
\}  
System.out.println("请选择要点赞的商品序号：");  
int like = input.nextInt();  
if (like<food.length&&food\[like - 1\] != null) \{  
  
food\[like - 1\].like += 1;  
System.out.println("点赞成功~");  
\} else \{  
System.out.println("您要点赞的商品不存在！");  
\}  
\}  
  
  
private void delectOrder() \{  
// TODO Auto-generated method stub  
System.out.println("\*\*\*\*删除订单\*\*\*\*");  
System.out.print("请输入要删除的订单序号：");  
int b = input.nextInt();  
if (b <= orders.length && orders\[b - 1\] != null && orders\[b - 1\].name != null) \{  
if (orders\[b - 1\].states.equals("1")) \{  
for (int i = b - 1; i < orders.length - 1; i++) \{  
orders\[i\] = orders\[i + 1\];  
\}  
orders\[orders.length - 1\] = null;  
System.out.print("删除成功!");  
\} else \{  
System.out.print("您选择的订单未签收，不能删除!");  
\}  
\} else \{  
System.out.print("该订单不存在!");  
\}  
\}  
  
  
private void sign() \{  
// TODO Auto-generated method stub  
System.out.println("\*\*\*\*签收订单\*\*\*\*");  
System.out.print("请选择要签收的订单序号：");  
int xuhao = input.nextInt();  
if (orders\[xuhao - 1\] != null && orders\[xuhao - 1\].name != null && orders\[xuhao - 1\].states.equals("0")) \{  
orders\[xuhao - 1\].states = "1";  
System.out.println("订单签收成功");  
\} else \{  
System.out.print("该订单已签收或者不存在该订单");  
\}  
\}  
  
  
private void back() \{  
// TODO Auto-generated method stub  
System.out.println("按0返回主菜单：");  
int back = input.nextInt();  
if(back==0)\{  
orderMenu();  
\}else\{  
System.out.println("谢谢使用，已退出!");  
\}  
\}  
  
  
private void toOrder() \{  
  
System.out.println("\*\*\*\*我要订餐\*\*\*\*");  
System.out.print("请输入订餐人姓名：");  
String name = input.next();  
System.out.println("序号\\t菜名\\t\\t单价\\t\\t点赞数");  
for (int i = 0; i < food.length; i++) \{  
if (food\[i\] != null) \{  
System.out.println(i + 1 + "\\t" + food\[i\].name + "\\t\\t" + food\[i\].price + "元\\t\\t" + food\[i\].like);  
\}  
\}  
System.out.print("请选择您要点的菜品编号：");  
int bianhao = input.nextInt();  
System.out.print("请选择您需要的份数：");  
int fenshu = input.nextInt();  
System.out.print("请选择送餐的时间（送餐时间是10点至20点间整点送餐）：");  
String shijian = input.next();  
System.out.print("请选择送餐地址：");  
String dizhi = input.next();  
for (int i = 0; i < orders.length; i++) \{  
if (orders\[i\] == null) \{  
double canfei = food\[bianhao - 1\].price \* fenshu;  
double song = 0;  
if (canfei < 50.00) \{  
song = 10;  
\}  
double zongfei = canfei + song;  
orders\[i\] = new ClientOrder(name, food\[bianhao - 1\].name+fenshu+"份", shijian, dizhi, "0", zongfei);  
System.out.println("订餐成功！");  
System.out.println("您定的是：" + food\[bianhao - 1\].name + fenshu + "份");  
System.out.println("送餐时间：" + shijian + "点");  
System.out.println("餐费：" + canfei + "元，" + "送餐费:" + song + "元，总计" + zongfei + "元。");  
break;  
\}  
\}  
  
\}  
\}

public class OrderTest \{//最后是测试这个项目  
public static void main(String\[\] args) \{  
OrderingMgr eat=new OrderingMgr();  
    eat.init();  
    eat.orderMenu();      
\}  
\}