JAVA语言基础实战-吃货联盟订餐系统

吃货联盟订餐系统

package p190;
import java.util.Scanner;
public class P190 {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		
		//初始化存储数组
		String names[] = new String[4];			//姓名
		String dishMegs[] = new String[4];		//菜名
		int dishNum[] = new int[4];			//菜品编号
		int times[] = new int[4];			//送餐时间
		String addresses[] = new String[4];		//地址
		int states[] = new int[4];			//订单状态
		double sumPrices[] = new double[4];		//总价
		String dishNames[] = new String[] {"红烧带鱼", "鱼香肉丝", "时令鲜蔬"};
		double prices[] = new double[] {38.0, 20.0, 10.0};
		int praiseNums[] = new int[3];			//点赞数
		//判断用户输入的是否为0，退出系统
		int num = -1;
		
		//判断是否结束程序
		boolean isExit = false;
		
		//初始化两条订单信息
		//第1条
		names[0] = "张晴";
		dishMegs[0] = "红烧带鱼";
		dishNum[0] = 2;
		times[0] = 12;
		addresses[0] = "天成路207号";
		states[0] = 1;
		sumPrices[0] = 76.0;
		//第2条
		names[1] = "张晴";
		dishMegs[1] = "鱼香肉丝";
		dishNum[1] = 2;
		times[1] = 18;
		addresses[1] = "天成路207号";
		states[1] = 0;
		sumPrices[1] = 45.0;
		
		
		//界面初始化
		System.out.println("欢迎使用“吃货联盟订餐系统”");
		
		//界面需要0返回主界面
		//所以需要先显示界面再判断
		//所以用do-while循环，无论如何执行一次循环体
		while(true){
			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：");
			
			boolean legal = true; 
			
			
			num = in.nextInt();
			
			//主界面输入选择
			switch(num) {
			case 1:
				System.out.println("***我要订餐***");
				boolean isAdd = false;
				for(int j = 0; j < names.length; j++) {
					if(names[j] == null) {
						isAdd = true;
						System.out.println("请输入订餐人姓名:");
						String name = in.next();
						System.out.println("序号" + "\t" + "菜名" + "\t" 
    + "单价" + "\t" + "点赞数");
						for(int i = 0; i < dishNames.length; i++) {
							String price = prices[i]+"元";
							String priaiseNum = (praiseNums[i]) > 0 
    ? praiseNums[i] + "赞" : "0";
					    System.out.println(i + 1 + "\t" + dishNames[i] 
    + "\t" + price + "\t" + priaiseNum);
						}
						System.out.println("请选择您要点的菜品编号：");
						int chooseDish = in.nextInt();
						System.out.println("请选择您需要的份数：");
						int chooseNumber = in.nextInt();
						String dishMeg = dishNames[chooseDish -1] 
    + " " + chooseNumber + "份";
						double sumPrice = 
    prices[chooseDish - 1] * chooseNumber;
						//订餐费满50，减5元配送费
						double deliCharge = (sumPrice >= 50) ? 0 : 5;
						System.out.println("
    请输入送餐时间（送餐时间是10点到20点整点送餐）：");
						int time = in.nextInt();
						while(time < 10 || time > 20) {
							System.out.println("
    您输入的时间有误，请输入10~20间的整数！");
							time = in.nextInt();
						}
						System.out.println("请输入送餐地址：");
						String address = in.next();
						//默认是0
						System.out.println("订餐成功！");
						System.out.println("您订的是：" + dishMeg);
						System.out.println("送餐时间：" + time + "点");
						System.out.println("餐费："+ sumPrice 
    + "元，送餐费" + deliCharge + "元， 总计：" 
    + (sumPrice + deliCharge) + "元。");
						//添加数据
						names[j] = name;
						dishMegs[j] = dishMeg;
						times[j] = time;
						addresses[j] = address;
						sumPrices[j] = sumPrice+ deliCharge;
						break;
					}
				}
				if(!isAdd) {
					System.out.println("对不起，您的餐袋已满！");
				}
				break;
			case 2:
				System.out.println("***查看餐袋***");
				System.out.println("
    序号\t订餐人\t餐品信息\t送餐日期\t送餐地址\t\t总金额\t订单状态");
				for(int i = 0; i < names.length; i++) {
					if(names[i] != null) {
						String state = (states[i] == 0) 
    ? "已预定" : "已完成";
						String date = times[i] + "日";
						String sumPrice = sumPrices[i] + "元";
						System.out.println((i + 1) + "\t" 
    + names[i] + "\t" + dishMegs[i] + "\t" + date + "\t" 
    + addresses[i] + "\t" + sumPrice + "\t" + state);
					}
				}
				break;
			case 3:
				System.out.println("***签收订单***");
				boolean isSignFind = false;
				System.out.println("请选择要签收的订单序号：");
				int signOrderId = in.nextInt();
				for(int i = 0; i < names.length; i++) {
					if(names[i] != null && states[i] == 0 
    && signOrderId == i+1) {
						states[i] = 1;
						System.out.println("定单签收成功！");
						isSignFind = true;
					}else if(names[i] != null && states[i] == 1 
    && signOrderId == i+1) {
						System.out.println("
    您选择的订单已完成签收，不能再次签收！");
						isSignFind = true;
					}
				}
				if(! isSignFind) {
					System.out.println("您选择的订单不存在！");
				}
				break;
			case 4:
				System.out.println("***删除订单***");
				boolean isDelFind = false;
				System.out.println("请输入要删除的订单序号：");
				int delId = in.nextInt();
				for(int i = 0; i < names.length; i++) {
					if(names[i] != null && states[i] == 1 
    && delId == i + 1) {
						isDelFind = true;
						for(int j = delId-1; 
    j < names.length - 1; j++) {
							names[j] = names[j+1];
							dishMegs[j] = dishMegs[j+1];
							times[j] = times[j+1];
							addresses[j] = addresses[j+1];
							states[j] = states[j+1];
							sumPrices[j] = sumPrices[j+1];
						}
						int endIndex = names.length - 1;
						names[endIndex] = null;
						dishMegs[endIndex] = null;
						times[endIndex] = 0;
						addresses[endIndex] = null;
						states[endIndex] = 0;
						sumPrices[endIndex] = 0;
						System.out.println("删除订单成功！");
						break;
					}else if(names[i] != null 
    && states[i] == 0 && delId == i + 1) {
						System.out.println("
    您选择的订单未签收，不能删除！");
						isDelFind = true;
						break;
					}
				}
				if(! isDelFind) {
					System.out.println("您要删除的订单不存在！");
				}
				break;
			case 5:
				System.out.println("***我要点赞***");
				System.out.println("序号\t" + "菜名\t" 
    + "单价\t" + "点赞数\t");
				for(int i = 0; i < dishNames.length; i++) {
					String price = prices[i] + "元";
					String priaiseNum = 
    (praiseNums[i] >= 0)? praiseNums[i]+ "赞": "";
					System.out.println((i+1)+ "\t"
    + dishNames[i]+ "\t"+ price+ "\t"+ priaiseNum);
				}
				System.out.println("请选择您要点赞的菜品序号：");
				int priaiseNum = in.nextInt();
				if(priaiseNum > 3 || priaiseNum < 0) {
					System.out.println("输入的序号有误！");
					break;
				}
				praiseNums[priaiseNum-1]++;
				System.out.println("点赞成功！");
				break;
			case 6:
				isExit = true;
				break;
			default:
				System.out.println("输入有误，请重新输入!");
				legal = false;
				break;
			}
			if(!legal) {
				continue;
			}
			if(!isExit) {
				System.out.println("输入0返回：");
				num = in.nextInt();
			}else {
				break;
			}	
		}
		in.close();
	}
}