Java第五章实战项目——吃货联盟订餐系统

Java第五章实战项目——吃货联盟订餐系统

第一阶段：分析数据主题

第二阶段：分析并完成整体框架

第三阶段：分析并完成退出功能

第四阶段：分析并完成查看餐袋功能

第五阶段：分析并完成订餐功能

第六阶段：分析并完成签收订单功能

第七阶段：分析并完成删除订单功能

第八阶段：分析并完成点赞功能

注意细节：标识位，跳转语句，数组的操作

还有熟练掌握调试技巧

代码过程：

import java.util.*;
public class Work1 {
		public static void main(String[] args) {
			// TODO Auto-generated method stub
			String[] menus= new String[]{"红烧带鱼","鱼香肉丝","时令新蔬"};//菜单
			double[] price = new double[] {38,20,10}; //价格
			int[] dz = new int[] {0,1,0};  //点赞
			
			String name =null;
			int orderIndex = 0;
			int orderSecond = 0;
			int Time =40;
			String address = null;
			
			System.out.println("欢迎使用吃货联盟订餐进餐");
			Scanner sc =new Scanner(System.in);
			int type = 0;
			
			String []orderName = {"张晴","张晴",null,null,null} ;//订餐人
			int []orderDc = {1,2,0,0,0};//菜单
			int []orderFl = {2,2,0,0,0};//份
			int []orderTime = {3,10,0,0,0};//日期
			String []orderAddress = {"天成路","天成路",null,null,null};//地址
			String []orderZt = {"已完成","未送达",null,null,null};  //状态
			double[] totals = {76,45,0,0,0};  //价格
			double total1 = 0;
			double total2 = 0;
			
			do {
				//目录
				System.out.println("***********************");
				System.out.println("1、我要订餐");
				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: ");
				type = sc.nextInt();
				
				switch(type) {
				
					case 1:
						//我要订餐
						int flag = 1;
						for(int i=0;i<orderName.length;i++) {
							if(orderName[i]==null) {
								flag = 0;
								System.out.println("******我要订餐*******");
								System.out.println("请输入订单人姓名: ");
								name = sc.next();
								System.out.println("序号\t"+"菜名\t"+"单价\t"+"点赞");
								for(int a=0;a<menus.length;a++) {
									System.out.println((a+1)+"\t"+menus[a]+"\t"+price[a]+"\t"+dz[a]);
								}
								do {
									System.out.println("请选择您要点的菜单编号: ");
									orderIndex = sc.nextInt();
									if(orderIndex>menus.length || orderIndex<0) {
										System.out.println("没有这个编号菜单，请重新输入");
										continue;
									}
								}while(orderIndex>menus.length || orderIndex<0);
								
								System.out.println("请选择您需要几份: ");
								orderSecond = sc.nextInt();
								Time = 40;
								do {
										System.out.println("请输入送餐时间(送餐时间是10点~20点整点送餐)");
										Time = sc.nextInt();
										if(Time<10 || Time>20) {
											System.out.println("输入送餐时间错误");
											continue;
										}
								}while(Time<10 || Time>20);
								total1= price[orderIndex-1]*orderSecond;
								total2=total1+6;
								System.out.println("请输入送餐地址: ");
								address = sc.next();
								System.out.println("订餐成功！ ");
								System.out.println("您订的是: "+menus[orderIndex-1]+orderSecond+"份");
								System.out.println("送餐时间: "+Time+"点");
								System.out.println("餐费: "+total1+",送餐费6元，总计: "+total2);
								
								for(int k=0;k<orderName.length;k++) {
									if(orderName[k]==null) {
										orderName[k]=name;
										orderDc[k]=orderIndex;
										orderFl[k]=orderSecond;
										orderTime[k]=Time;
										orderAddress[k]=address;
										orderZt[k]="未送达";
										totals[k]=total1;
										break;
									}
								}
								System.out.println("按0返回");
								type =sc.nextInt();
								break;
							}
						}
						if(flag==1) {
							System.out.println("餐袋已经满了，请删除多余餐袋");
							System.out.println("按0返回");
							type =sc.nextInt();
							break;
						}
						break;
					case 2:
						//查看餐袋
						System.out.println("序号\t"+"订餐人\t"+"所订的餐\t"+"份量\t"+"日期\t"+"送餐地址\t"+"状态\t"+"价格");
						for(int i=0;i<orderName.length;i++) {
							if(orderName[i]==null) {
								break;
							}
							System.out.println((i+1)+"\t"+orderName[i]+"\t"+menus[orderDc[i]-1]+"\t"+orderFl[i]+"\t"
									+orderTime[i]+"\t"+orderAddress[i]+"\t"+orderZt[i]+"\t"+totals[i]);
						}
						System.out.println("按0返回");
						type =sc.nextInt();
						break;
			
					case 3:
						//签收订单
						System.out.println("*********签收订单***********");
						System.out.println("序号\t"+"订餐人\t"+"所订的餐\t"+"份量\t"+"日期\t"+"送餐地址\t"+"状态\t"+"价格");
						for(int i=0;i<orderName.length;i++) {
							if(orderName[i]==null) {
								break;
							}
							System.out.println((i+1)+"\t"+orderName[i]+"\t"+menus[orderDc[i]-1]+"\t"+orderFl[i]+"\t"
									+orderTime[i]+"\t"+orderAddress[i]+"\t"+orderZt[i]+"\t"+totals[i]);
						}
						do {
						System.out.println("请选择签收订单的序号: ");
						type=sc.nextInt();
							if(type>orderName.length||type<0) {
								System.out.println("签收订单号不存在");
								continue;
							}	
						}while(type>orderName.length||type<0);
						orderZt[type-1]="已完成";
						System.out.println("订单签收成功!");
						
						System.out.println("按0返回");
						type =sc.nextInt();
						break;
		
					case 4:
						//删除订单
						System.out.println("***********删除订单****************");
						System.out.println("序号\t"+"订餐人\t"+"所订的餐\t"+"份量\t"+"日期\t"+"送餐地址\t"+"状态\t"+"价格");
						for(int i=0;i<orderName.length;i++) {
							if(orderName[i]==null) {
								break;
							}
							System.out.println((i+1)+"\t"+orderName[i]+"\t"+menus[orderDc[i]-1]+"\t"+orderFl[i]+"\t"
									+orderTime[i]+"\t"+orderAddress[i]+"\t"+orderZt[i]+"\t"+totals[i]);
						}
						do {
							System.out.println("请选输入要删除的订单序号：");
							type=sc.nextInt();
							if(type>orderName.length||type<0) {
								System.out.println("没有这个序号，请重新输入");
								continue;
							}
						}while(type>orderName.length||type<0);
						if(orderZt[type-1]=="未送达") {
							System.out.println("您选择的订单未签收，不能删除");
						}else if(orderZt[type-1]=="已完成"){
							System.out.println("删除订单成功");
							for(int i=type-1;i<orderName.length-1;i++) {
								orderName[i]=orderName[i+1];
								orderDc[i]=orderDc[i+1];
								orderFl[i]=orderFl[i+1];
								orderTime[i]=orderTime[i+1];
								orderAddress[i]=orderAddress[i+1];
								orderZt[i]=orderZt[i+1];
								totals[i]=totals[i+1];
							}
							orderName[orderName.length-1]=null;
							orderDc[orderDc.length-1]=0;
							orderFl[orderFl.length-1]=0;
							orderTime[orderTime.length-1]=0;
							orderAddress[orderAddress.length-1]=null;
							orderZt[orderZt.length-1]=null;
							totals[totals.length-1]=0;
						}else {
							System.out.println("没有此订单");
						}
						System.out.println("按0返回");
						type =sc.nextInt();
						break;
						
						
					case 5:
						//我要点赞
						System.out.println("******我要点赞*******");
						System.out.println("序号\t"+"菜名\t"+"单价\t"+"点赞");
						for(int i=0;i<menus.length;i++) {
							System.out.println((i+1)+"\t"+menus[i]+"\t"+price[i]+"\t"+dz[i]);
						}
						do {
							System.out.println("请输入点赞的序号:  ");
							type = sc.nextInt();
							if(type>menus.length||type<0) {
								System.out.println("没有这个序号");
								continue;
							}
						}while(type>menus.length||type<0);
						dz[type-1]=dz[type-1]+1;
						System.out.println("点赞成功");
						
						System.out.println("按0返回");
						type =sc.nextInt();
						break;
					}
				if(type !=6) {
					while(type!=0){
						System.out.println("输入序号有误");
						System.out.print("输入0返回:");
						type=sc.nextInt();
					}
				}
			}while(type!=6);
			
			System.out.println("谢谢使用程序");	
	}
}

以下是输出结果