吃貨聯盟訂餐系統

import java.util.*;
public class OrderingUtil {     //點餐類
    Scanner sc = new Scanner (System.in);
    OrderingSet oSet = new OrderingSet();
    String[] dishNames = { "紅燒魚", "油豆腐炒肉", "土豆絲" }; // 菜品名稱
    double[] prices = new double[] { 38.0, 15.0, 12.0 }; // 菜品價格
    int[] prainseNums = new int
 
[3]; // 點贊數

    public void initial() {
        // 初始化第一條訂單資訊
        oSet.names[0] = "張晴";
        oSet.dishMegs[0] = "紅燒魚2份";
        oSet.times[0] = 12;
        oSet.addresses[0] = "楊柳路207號";
        oSet.sumPrinces[0] = 76.0;
        oSet.states[0] = 1;
        // 初始化第二條訂單資訊
        oSet.names[0] = "張晴";
        oSet.dishMegs[0
 
] = "油豆腐炒肉2份";
        oSet.times[0] = 18;
        oSet.addresses[0] = "楊柳路207號";
        oSet.sumPrinces[0] = 30;
        oSet.states[0] = 0;
    }
public boolean add(){   //點餐方法
    boolean isAdd = false;// 記錄是否可以點餐
    for (int j = 0; j < oSet.names.length; j++) {
        if (oSet.names[j]==null) {  //找到第一個位置，可新增訂單資訊
 

            isAdd = true;   //置標誌位，可以訂餐
            System.out.print("請輸入訂餐人姓名:");
            String name = sc.next();    
            //顯示供選擇的菜品資訊
            System.out.println("序號"+"\t"+"菜品"+"\t"+"單價"+"\t"+"點贊數");
            for (int i = 0; i < dishNames.length; i++) {
                String price = prices[i]+"元";
                String priaiseNum = (prainseNums[i])>0? prainseNums[i]+"贊":"0";
                System.out.println((i+1)+"\t"+dishNames[i]+"\t"+price+"\t"+priaiseNum);
            }
            //使用者點餐
            System.out.print("請選擇您要點的菜品編號:");
            int chooseDish = sc.nextInt();
            System.out.print("請選擇您需要的份數:");
            int number =  sc.nextInt();
            String dishMeg = dishNames[chooseDish-1]+" "+number+"份";
            double sumPrice = prices[chooseDish-1]*number;
            //滿費50元，免送餐費5元
            double deliCharge = (sumPrice>=50)?0:5;
            System.out.print("請輸入送餐時間(送餐時間是10點至12點間整點送餐):");
            int time = sc.nextInt();
            while (time<10 || time>20) {
                System.out.println("您的輸入有誤，請輸入10~20之間的整數!");
                time=sc.nextInt();
            }
            System.out.print("請輸入送餐地址:");
            String address = sc.next();

            //無需新增狀態，預設是0，即已預定狀態
            System.out.println("訂餐成功!");
            System.out.println("您訂的是:"+dishMeg);
            System.out.println("送餐時間:"+time+"點");
            System.out.println("餐費:"+sumPrice+"元，送餐費"+deliCharge+"元，總計:"+(sumPrice+deliCharge)+"元。");

            //新增資料
            oSet.names[j] = name;
            oSet.dishMegs[j] = dishMeg;
            oSet.times[j] =time;
            oSet.addresses[j] = address;
            oSet.sumPrinces[j]=sumPrice+deliCharge;
            break;
        }
    }
    if(!isAdd){
        System.out.println("對不起，您的餐袋已滿!");
        return false;
    }else
    return true;
}
public void display(){
    System.out.println("序號\t訂餐人\t餐品資訊\t\t送餐時間\t送餐地址\t\t總金額\t訂單狀態");
    for (int i = 0; i < oSet.names.length; i++) {
        if (oSet.names[i]!=null) {
            String state =(oSet.states[i]==0)?"已預定":"已完成";
            String date = oSet.times[i]+"點";
            String sumPrice = oSet.sumPrinces[i]+"元";
            System.out.println((i+1)+"\t"+oSet.names[i]+"\t"+oSet.dishMegs[i]+"\t"+date+"\t"
            +oSet.addresses[i]+"\t"+sumPrice+"\t"+state);
        }
    }
}
public void sigh(){

    boolean isSignFind = false; //找到要簽收的訂單
    System.out.print("請選擇要簽收的訂單序號:");
    int signOrderId = sc.nextInt();
    for (int i = 0; i <oSet.names.length; i++) {
        if (oSet.names[i]!=null&&oSet.states[i]==0&&signOrderId == i+1) {
            oSet.states[i]=1;//將狀態值置為已完成
            System.out.println("訂單簽收成功!");
            isSignFind = true;  //標記已找到訂單
        }else if(oSet.names[i]!=null&&oSet.states[i]==1&&signOrderId ==i+1){
            System.out.println("請選擇的訂單已完成簽收，不能再次簽收!");
            isSignFind = true;  //標記已找到訂單
        }
    }
    if(!isSignFind){
        System.out.println("您選擇的訂單不存在!");
    }
}
public void delete(){
    boolean isDelFind = false;      //標記是否找到要刪除的訂單
    System.out.print("請輸入要刪除的訂單序號:");
    int delId  = sc.nextInt();
    for (int i = 0; i < oSet.names.length; i++) {
        if (oSet.names[i]!=null&&oSet.states[i]==1&&delId == i+1) {
            isDelFind = true;   //標記已找到次訂單
            //執行刪除操作:刪除位置後的元素依次前移
            for (int j = delId-1; j < oSet.names.length-1; j++) {
                oSet.names[j] = oSet.names[j+1];
                oSet.dishMegs[j]= oSet.dishMegs[j+1];
                oSet.times[j] = oSet.times[j+1];
                oSet.addresses[j] = oSet.addresses[j+1];
                oSet.states[j] = oSet.states[j+1];
                oSet.sumPrinces[j] = oSet.sumPrinces[j+1];
            }
            //最後一位清空
            int endIndex = oSet.names.length-1;
            oSet.names[endIndex] =null;
            oSet.dishMegs[endIndex] = null;
            oSet.times[endIndex] = 0;
            oSet.addresses[endIndex]=null;
            oSet.states[endIndex] = 0;
            oSet.sumPrinces[endIndex]=0;
            System.out.println("刪除訂單成功!");
            break;
        }else if(oSet.names[i]!=null && oSet.states[i]==0&&delId==i+1){
            System.out.println("您選擇的訂單未簽收，不能刪除!");
            isDelFind = true;   //標記找到此訂單
            break;
        }
    }
    //未找到該序列號的訂單:不能刪除
    if (!isDelFind) {
        System.out.println("您要刪除的訂單不存在!");
    }
}
public void praise(){
    //顯示菜品資訊
    System.out.println("序號"+"\t"+"菜名"+"\t"+"單價");
    for (int i = 0; i < dishNames.length; i++) {
        String price = prices[i]+"元";
        String priaiseNum = (prainseNums[i])>0?prainseNums[i]+"贊":"";
        System.out.println((i + 1) + "\t" + dishNames[i] + "\t" + prices[i] + "元" + priaiseNum);
    }
    System.out.print("請選擇您要點讚的菜品序號：");
    int number = sc.nextInt();
    prainseNums[number - 1]++;
    System.out.println("點贊成功");
}
    public void startMenu() {

        int num = -1;   //使用者輸入0返回主選單，否則退出系統
        boolean isExit = false; //標誌使用者是否退出系統，ture為退出系統
        System.out.println("\n歡迎使用 “吃貨聯盟訂餐系統” ");
        //迴圈:   顯示選單，根據使用者選擇的數字執行相應功能
        do {
            //顯示選單
            System.out.println("****************************");
            System.out.println("1、我要訂餐");
            System.out.println("2、檢視餐袋");
            System.out.println("3、簽收訂單");
            System.out.println("4、刪除訂單");
            System.out.println("5、我要點贊");
            System.out.println("6、退出系統");
            System.out.println("****************************");
            System.out.print("請選擇:");
            int choose = sc.nextInt();  //記錄使用者選擇的功能編號
            switch (choose) {
            case 1:
                System.out.println("***我要訂餐***");
                add();
                break;
            case 2:
                System.out.println("***檢視餐袋***");
                display();
                break;
            case 3:
                System.out.println("****簽收訂單***");
                sigh();
                break;
            case 4:
                System.out.println("***刪除訂單***");
                delete();
                break;
            case 5:
                System.out.println("***我要點贊***");
                praise();
                break;
            case 6:
                System.out.println("系統退出");
            isExit = true;
            break;
            default:
                System.out.println("請輸入正確的數字!");
                isExit = true;
                break;
            }
            if(!isExit){
                System.out.print("輸入0返回:");
                num = sc.nextInt();
            }else{
                break;
            }
        } while (num == 0);
    }
}

public class OrderingSet {
    //資料主體:一組訂單資訊
    String [] names = new String [4];       //儲存訂餐人名稱
    String [] dishMegs = new String [4];    //儲存所選資訊，包括菜品名及份數
    int []  times = new int [4];            //儲存送餐時間
    String [] addresses = new String [4];   //儲存送餐地址
    int [] states = new int [4];            //儲存訂單狀態:0表示預定，表示已完成
    double [] sumPrinces  = new double [4]; //儲存訂單的總金額
}

import java.util.*;
public class OrderingMgr {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        OrderingUtil om = new OrderingUtil();
        om.initial();
        om.startMenu();
        }
    }