房上的猫：吃货联盟项目

String[] name = new String[4];// 订餐人
    String[] greens = new String[4];// 储存菜品名称
    String[] green = { "红烧带鱼", "鱼香肉丝", "时令鲜蔬" };// 菜品
    int[] num = new int[4];// 份数
    int[] time = new int[4];// 时间
    String[] site = new String[4];// 地址
    String[] state = new String[] { "预定", "预定", "预定", "预定" };// 订单状态
    double[] money = { 38, 20, 10 };// 单价
    int[] number = new int[3];// 点赞数
    double give;// 送餐费
    double[] moneys = new double[4];// 总金额
    Scanner bdqn = new Scanner(System.in);// 扫描仪
    int back;// 选择返回首页
    int i;// 数组下标
    int sign;// 签收订单
    int have;// 判断已签收订单

public void System() {// 首页
        System.out.println("\n欢迎使用“吃货联盟订餐系统”");
        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("**********************************************");
    }

public void Order() {// 订餐系统
        int bh = 0;
        for (; i < time.length;) {// 各数组的储存下标
            System.out.print("请输入订餐人姓名：");
            name[i] = bdqn.next();// 记录订餐人
            do {
                System.out.println("序号\t菜名\t单价\t点赞数");
                for (int j = 0; j < 3; j++) {// 循环输出菜单
                    System.out.println((j + 1) + "\t" + green[j] + "\t" + money[j]
                            + "\t" + number[j]);
                }
                System.out.print("请选择您要点的菜品编号:");
                bh = bdqn.nextInt();
                if (bh > 3 || bh < 1) {// 判断选菜
                    System.out.println("无此编号，请重新选择！");
                }
            } while (bh > 3 || bh < 1);// 无选择编号，循环重新选择菜单
            greens[i] = green[bh - 1];// 记录菜品
            System.out.print("请选择您需要的份数：");
            num[i] = bdqn.nextInt();// 记录份数
            System.out.print("请输入送餐时间（10-20之间的整数）：");
            do {
                time[i] = bdqn.nextInt();// 记录送餐时间
                if (time[i] < 10 || time[i] > 20) {
                    System.out.print("此时间不营业，请重新输入（10-20之间的整数）：");
                }
            } while (time[i] < 10 || time[i] > 20);// 不在送餐时间，则循环重新输入时间
            System.out.print("请输入送餐地址：");
            site[i] = bdqn.next();// 记录送餐地址
            System.out.println("订餐成功！");
            System.out.println("您订的是：" + greens[i] + "" + num[i] + "份");
            System.out.println("送餐时间：" + time[i] + "点");
            moneys[i] = money[bh - 1] * num[i] + give;// 送餐费的判断依据
            if (moneys[i] < 50) {// 判断是否有送餐费
                give = 5;
            }
            System.out.println("餐费：" + (moneys[i] - give) + "元,送餐费：" + give
                    + "元，总计：" + moneys[i] + "元。");
            break;
        }
        if (i >= name.length) {// 餐袋限额为4，装满则输出该语句
            System.out.println("餐袋已满！");
        } else {
            i++;
        }
    }

public void Look() {// 餐袋系统
        for (int j = 0; j < i; j++) {// 循环输出餐袋，i为订餐数，超出i则不输出，防止输出空值
            System.out.println((j + 1) + "\t" + name[j] + "\t" + greens[j]
                    + num[j] + "份\t" + time[j] + "点\t" + site[j] + "\t"
                    + moneys[j] + "\t" + state[j]);
        }
    }

    public void Sign() {// 签收系统
        System.out.print("请选择要签收的订单序号：");
        sign = bdqn.nextInt();
        if (sign == have) {// 判断，如果签收后，提示该语句
            System.out.println("您选择的订单已完成签收，不能再次签收！");
        } else if (sign <= i) {// 有选择的订单，则赋值“签收”
            have = sign;// 该订单签收后，将签收的序列号储存
            state[sign - 1] = "签收";
            System.out.println("订单签收成功！");
        } else {
            System.out.println("无此订单！");
        }
    }

public void Delete(int delete) {// 删除系统
        if (delete <= i) {// 判断是否有该订单
            if (state[delete - 1].equals("签收")) {// 判断该订单是否签收过
                for (int t = delete - 1; t < (i - 1); t++) {// 元素前移，条件为删除的订单{(i-1)是为了防止数组溢出}
                    name[t] = name[t + 1];
                    greens[t] = greens[t + 1];
                    num[t] = num[t + 1];
                    time[t] = time[t + 1];
                    site[t] = site[t + 1];
                    moneys[t] = moneys[t + 1];
                    state[t] = state[t + 1];
                }
                System.out.println("删除订单成功！");
                i--;
                have = 0;
            } else {
                System.out.println("您选择的订单未签收，不能删除！");
            }
        } else {
            System.out.println("无此订单！");
        }
    }

public void Like(int good) {// 点赞系统
        switch (good) {// 每次选择点赞该商品+1
        case 1:
            number[0]++;
            System.out.println("点赞成功！");
            break;
        case 2:
            number[1]++;
            System.out.println("点赞成功！");
            break;
        case 3:
            number[2]++;
            System.out.println("点赞成功！");
            break;
        default:
            System.out.println("无此商品序号！");
            break;
        }
    }

public void shown() {// 整体框架
        do {
            give = 0;
            System();// 首页
            System.out.print("请选择：");
            int select = bdqn.nextInt();
            if (select == 6) {// 退出
                break;
            }
            switch (select) {// 选择功能
            case 1:// 订餐
                System.out.println("***我要订餐***");
                Order();
                break;
            case 2:// 餐袋
                System.out.println("***查看餐袋***");
                System.out.println("序号\t订餐人\t餐品信息\t送餐时间\t送餐地址\t总金额\t订单状态");
                Look();
                break;
            case 3:// 签收
                System.out.println("***签收订单***");
                Sign();
                break;
            case 4:// 删除
                System.out.println("***我要订餐***");
                System.out.print("请输入要删除的订单号：");
                int scl = bdqn.nextInt();
                Delete(scl);
                break;
            case 5:// 点赞
                System.out.println("***删除订单***");
                System.out.print("请选择您要点赞的菜品序号：");
                int good = bdqn.nextInt();
                Like(good);
                break;
            default:
                System.out.println("您输入的数字没有相符合的系统，请重新选择：");
                break;
            }
            System.out.print("输入0返回：");
            back = bdqn.nextInt();
        } while (back == 0);
    }

public static void main(String[] args) {
        Ordering pack = new Ordering();
        pack.shown();
        System.out.println("谢谢使用，欢迎下次光临！");
    }