用二维数组做一个简易酒店管理系统

Room类：
package com.zg.seconddemo;

import java.util.Arrays;

public class Room {
    private int number;
    private String type;
    private boolean status;
    
    public Room() {
    }

    public Room(int number, String type, boolean status) {
        this.number = number;
        this.type = type;
        this.status = status;
    }


    public int getNumber() {
        return number;
    }

    public void setNumber(int number) {
        this.number = number;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public boolean isStatus() {
        return status;
    }

    public void setStatus(boolean status) {
        this.status = status;
    }

    //打印酒店房间信息
    @Override
    public String toString() {
        return
                "房号是:" + number +
                ", 类型是:'" + type + '\'' +
                ", 房间状态:" + (status?"空闲":"占用")+"\n"
                ;
    }
}

Hotel类：

package com.zg.seconddemo;

public class Hotel {
    //创建一个二维数组模拟酒店房间
    Room[][] room = new Room[3][5];

    public Hotel() {
        //初始化房间信息
        for (int i = 0; i <room.length ; i++) {
            for (int j = 0; j <room[i].length ; j++) {
                if (i==0)
                    room[i][j]= new Room((i+1)*100+j+1,"单人间",true);
                if (i==1)
                    room[i][j]= new Room((i+1)*100+j+1,"标人间",true);
                else if (i==2)
                    room[i][j]= new Room((i+1)*100+j+1,"豪华间",true);
            }
        }
    }

    public Hotel(Room[][] room) {
        this.room = room;
    }

    //订房
    public void Book(int a){
          if (room[a/100-1][a%100-1].isStatus()==true){
              System.out.println(room[a/100-1][a%100-1].getNumber()+"房间订房成功");
           room[a/100-1][a%100-1].setStatus(false);
          }
          else
              System.out.println(room[a/100-1][a%100-1].getNumber()+"房间已经被预定或已经有客人入住");
    }
    //退房
    public void back(int a){
        if (room[a/100-1][a%100-1].isStatus()==false) {
            System.out.println(room[a/100-1][a%100-1].getNumber()+"房间退房成功");
            room[a/100-1][a%100-1].setStatus(true);
        }
        else
            System.out.println(room[a/100-1][a%100-1].getNumber()+"房间没有被预定或没有客人入住");
}

    //查看酒店房间信息
    public void View(){
        for (int i = 0; i < room.length; i++) {
            for (int j = 0; j <room[i].length ; j++) {
                System.out.print(room[i][j]);
            }
            System.out.println();
        }

    }

}

HomeTest类：

package com.zg.seconddemo;

import java.util.Scanner;

public class HotelTest {
    public static void main(String[] args) {
        Hotel hotel = new Hotel();
        System.out.println("欢迎使用如家酒店管理系统!");
        System.out.print("请按照规范输入数字进行系统操作：");
        System.out.println("(1)======>查看房间信息  (2)======>订房  (3)======>退房   (0)======>退出系统");
         while (true){
             Scanner scanner = new Scanner(System.in);
             int a = scanner.nextInt();
             if (a==1) hotel.View();
             else if (a==2){
                 System.out.println("请输入需要订房的房间楼层和房间号,例如201");
                 Scanner scanner1 = new Scanner(System.in);
                 int b = scanner1.nextInt();
                 hotel.Book(b);
             }
             else if (a==3){
                 System.out.println("请输入需要退房的房间楼层和房间号,例如201");
                 Scanner scanner1 = new Scanner(System.in);
                 int b = scanner1.nextInt();
                 hotel.back(b);
             }
             else if (a==0) {
                 System.out.println("欢迎下次光临如家酒店!");
                 return;
             }
             else  System.out.println("您输入的数字有误，请重新输入");
         }
    }
}

运行截图