【Java学习笔记】二维数组模拟酒店管理系统

首先创建一个房间类Room

package com.longya.HOTEL;

public class Room
{
    private int no;
    private String type;
    private boolean occupancy;

    public Room(int no, String type, boolean occupancy)
    {
        this.no = no;
        this.type = type;
        this.occupancy = occupancy;
    }

    //重写toString()——按照规定格式输出房间信息
    public String toString()
    {
        String str = occupancy ? "占用" : "空闲";
        return "[no=" + no + "，房型=" + type + "，状态=" + str + "]";
    }

    //setter/getter
    public int getNo(){ return no;}
    public void setNo(int no){ this.no = no;}
    public String getType(){ return type;}
    public void setType(String type){ this.type = type;}
    public boolean getOccupancy(){ return occupancy;}
    public void setOccupancy(boolean occupancy){ this.occupancy = occupancy;}
}

然后，创建一个旅馆类Hotel

package com.longya.HOTEL;

public class Hotel
{
    Room[][] rooms;

    public Hotel(){
        rooms = new Room[5][9];  //默认创建5层楼，每层9个房间
        //给所有房间编号
        for (int i = 0; i < rooms.length; i++)
        {
            for (int j = 0; j < rooms[i].length; j++)
            {
                /*
                    房间分布设置：1楼、2楼为标准间，3楼为单人间，4楼为情侣间，5楼为豪华间
                */
                if (i == 0 || i == 1)
                {
                    rooms[i][j] = new Room((i + 1) * 100 + j + 1, "标准间", false);
                }else if (i == 2)
                {
                    rooms[i][j] = new Room((i + 1) * 100 + j + 1, "单人间", false);
                }else if (i == 3)
                {
                    rooms[i][j] = new Room((i + 1) * 100 + j + 1, "情侣间", false);
                }else if (i == 4)
                {
                    rooms[i][j] = new Room((i + 1) * 100 + j + 1, "豪华间", false);
                }

            }
        }
    }

    //显示所有房间信息
    public void display()
    {
        for (int i = 0; i < rooms.length; i++)
        {
            for (int j = 0; j < rooms[i].length; j++)
            {
                if (j % 3 == 0)
                {
                    System.out.println(); //每行显示三个房间的信息
                }
                System.out.print(rooms[i][j] + "\t");
            }
            System.out.println();
        }
    }

    //订房
    public void reserve(int no)
    {
        for (int i = 0; i < rooms.length; i++)
        {
            for (int j = 0; j < rooms[i].length; j++)
            {
                if (rooms[i][j].getNo() == no)
                {
                    rooms[i][j].setOccupancy(true); 
                    System.out.println("订房成功！您预定的房间编号为：" + no);
                    return;
                }
            }
        }
    }

    //退房
    public void checkout(int no)
    {
        for (int i = 0; i < rooms.length; i++)
        {
            for (int j = 0; j < rooms[i].length; j++)
            {
                if (rooms[i][j].getNo() == no)
                {
                    rooms[i][j].setOccupancy(false); 
                    System.out.println("您已成功退掉[" + no + "]房间!");
                    return;
                }
            }
        }
    }

    //根据房间编号，获取房间的占用情况occupancy
    public boolean getRoomOccupancy(int no)
    {
        for (int i = 0; i < rooms.length; i++)
        {
            for (int j = 0; j < rooms[i].length; j++)
            {
                if (rooms[i][j].getNo() == no)
                {
                    return rooms[i][j].getOccupancy();
                }
            }
        }
        return false;
    }
}

最后，创建一个测试类HotelTest

package com.longya.HOTEL;

import java.util.*;

public class HotelTest
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        System.out.println("-------------------------------------------------- 酒店管理系统 -------------------------------------------------");
        Hotel hotel = new Hotel();
        hotel.display();  //显示所有房间信息
        while(true)
        {           
            try
            {
                //订房
                System.out.println();
                System.out.print("请输入您想要入住的房间编号：");
                int no = sc.nextInt();
                if (hotel.getRoomOccupancy(no))
                {                   
                    System.out.println("该房间已经有人入住！请重新预定！");
                }else{
                    hotel.reserve(no);
                    hotel.display();
                }
                //退房
                System.out.println();
                System.out.print("请输入您想要退房的房间编号：");
                no = sc.nextInt();
                if (hotel.getRoomOccupancy(no))
                {                   
                    hotel.checkout(no);
                    hotel.display();
                }else{

                    System.out.println("该房间原本就无人入住！请重新输入！");
                }
            }
            catch (Exception e)
            {
                System.out.println("输入数据有误！请重新进入系统！"); return;
            }
        }
    }
}

运行结果如下：

至此程序结束！