Question

Write a program in Java, Python and Lisp

When the program first launches, there is a menu which allows the user to select one of the following five options:

1.) Add a guest

2.) Add a room

3.) Add a booking

4.) View bookings

5.) Quit

The functionality of these options is as follows:

1.) When users add a guest they provide a name which is stored in some manner of array or list. Guests are assigned a unique ID value where the first guest added is assigned the ID value 1, the second guest added is assigned the ID value 2 and so on.

2.) When users add a room they provide a room number and a room capacity (i.e. how many people can stay in the room at any one time) which is stored in some manner of array or list. Rooms have a property which indicates if they are booked or not for any given date – please see the Room Booking Dates section below for some guidance on the easiest way to implement this.

3.) When users add a booking they provide a guest ID, room number, the number of guests staying and finally a check-in date and check-out date. To successfully create a room booking:

• The guest ID must be a guest which is registered on the system,

• The room number must be of a room that exists,

• The room must be able to accommodate the number of people in the booking (i.e. if the room capacity is for 2 people and the booking has 4 people staying then the booking must be refused), and finally

• The room must be available on the dates requested.

4.) When users views bookings they have the option to: a. View guest bookings, or b. View room bookings. If the user opts to show guest bookings then they are prompted to enter the guest ID - and then any bookings made by that guest are displayed including: - The guest’s name, - Which room number they booked & number of guests staying, and - The check-in and check-out dates. If the user opts to show room bookings then they are prompted to enter a room number - and then any bookings for that room within the current year are displayed, including: - The guest’s name, - The number of guests staying, and - The check-in and check-out dates.

5.) When a user chooses to Quit the program terminates with a goodbye message.

Answer 1

Screenshot

Program

Guest.java

public class Guest {
   //Instance variable
   private static int cnt=0;
   private int ID=0;;
   private String name;
   //Constructor
   public Guest(String name) {
       ID=++cnt;
       this.name=name;
   }
   //Getters and setters
   public int getID() {
       return ID;
   }
   public String getName() {
       return name;
   }
   public void setName(String name) {
       this.name = name;
   }
}

Room.java

import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
public class Room {
   //Instance variable
   private String roomNum;
   private int capacity;
   Map<Date,Date> bookingDates;
   //Constructor
   public Room(String roomNum,int capacity) {
       this.roomNum=roomNum;
       this.capacity=capacity;
       bookingDates=new LinkedHashMap<Date,Date>();
   }
   //Method to add booking
   public void add(Date startDate,Date endDate) {
       bookingDates.put(startDate,endDate);
   }
   //Getters
   public String getRoomNum() {
       return roomNum;
   }
   public int getCapacity() {
       return capacity;
   }
   public Map<Date, Date> getBookingDates() {
       return bookingDates;
   }
}

Booking.java

import java.util.Date;
public class Booking {
   //Instance variables
   private Guest guest;
   private String roomNum;
   private int guestCnt;
   private Date checkIn;
   private Date checkOut;
   //Constructor
   public Booking(Guest g,String room,int cnt,Date in,Date out) {
       guest=g;
       roomNum=room;
       guestCnt=cnt;
       checkIn=in;
       checkOut=out;
   }
   //Get id method
   public int getId() {
       return guest.getID();
   }
   //Get room number
       public String getRoom() {
           return roomNum;
       }
       //Get check in date
               @SuppressWarnings("deprecation")
               public int year() {
                   return checkIn.getYear();
               }
   @Override
   public String toString() {
       return "Guest Name: "+guest.getName()+",\tRoom Number: "+roomNum+",\tGuest count: "+guestCnt+",\tCheckIn Date: "+checkIn+",\tCheckOut Date: "+checkOut;
   }
}

BookingTest.java

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Map;
import java.util.Scanner;

public class BookingTest {
   //Key board read
   private static Scanner sc=new Scanner(System.in);
   public static void main(String[] args) throws ParseException {
       //For storage
       ArrayList<Guest>guests=new ArrayList<Guest>();
       ArrayList<Room>rooms=new ArrayList<Room>();
       ArrayList<Booking>bookings=new ArrayList<Booking>();
       //Get user choice
       int opt=getMenu();
       //Loop until exit
       while(opt!=5) {
           sc.nextLine();
           //Execute each options
           if(opt==1) {
               addGuest(guests);
           }
           else if(opt==2) {
               addRoom(rooms);
           }
           else if(opt==3) {
               addBooking(bookings,rooms,guests);
           }
           else if(opt==4) {
               System.out.println("\nVIEW TWO WAYS:-\na. View guest bookings, or b. View room bookings");
               char ch=sc.nextLine().charAt(0);
               if(ch=='a') {
                   viewByGuest(bookings);
               }
               else {
                   viewByRoom(bookings);
               }
           }
           System.out.println();
           //Repetition
           opt=getMenu();
       }
       //Exit message
       System.out.println("\n****GOOD BYE***");
   }
   //Method to get menu
   private static int getMenu() {
       System.out.println("OPTIONS:-");
       System.out.println("1.) Add a guest\r\n" +
               "2.) Add a room\r\n" +
               "3.) Add a booking\r\n" +
               "4.) View bookings\r\n" +
               "5.) Quit");
       System.out.print("Enter your option:-");
       int opt=sc.nextInt();
       while(opt<1 || opt>5) {
           System.out.println("ERRROR!!!Option must be 1-5");
           System.out.print("Enter your option:-");
           opt=sc.nextInt();
       }
       return opt;
   }
   //Method to add a guest
   public static void addGuest(ArrayList<Guest>guests) {
       System.out.print("\nEnter name of the guest: ");
       guests.add(new Guest(sc.nextLine()));
   }
   //Method to add a room
   public static void addRoom(ArrayList<Room>rooms) {
       System.out.print("\nEnter room number: ");
       String rNum=sc.nextLine();
       System.out.println("Enter capacity of the room: ");
       int cap=sc.nextInt();
       sc.nextLine();
       Boolean check=false;
       for(int i=0;i<rooms.size();i++) {
           if(rooms.get(i).getRoomNum().equalsIgnoreCase(rNum)) {
               check=true;
           }
       }
       if(!check) {
           rooms.add(new Room(rNum,cap));
       }
       else {
           System.out.println("Room already exist!!!");
       }
   }
   //Method to add a booking
   public static void addBooking(ArrayList<Booking>bookings,ArrayList<Room>rooms,ArrayList<Guest>guests) throws ParseException {
       //Date formatting
       SimpleDateFormat formatter= new SimpleDateFormat("dd-mm-yyyy");
       //Prompt for booking data
       System.out.print("\nEnter Guest Id: ");
       int id=sc.nextInt();
       sc.nextLine();
       System.out.print("Enter room number: ");
       String rNum=sc.nextLine();
       System.out.print("Enter count of the guests: ");
       int cnt=sc.nextInt();
       sc.nextLine();
       System.out.print("Enter check in date in (dd-mm-yyyy): ");
       Date in=formatter.parse(sc.nextLine());
       System.out.print("Enter check out date in (dd-mm-yyyy): ");
       Date out=formatter.parse(sc.nextLine());
       boolean guestCheck=false,roomCheck=false,guestCntCheck=false;
       //Loop through to check guest id correct
       for(int i=0;i<guests.size();i++) {
           if(guests.get(i).getID()==id) {
               guestCheck=true;
               //Loop through to check room number correct
               for(int j=0;j<rooms.size();j++) {
                   if(rooms.get(j).getRoomNum().equalsIgnoreCase(rNum)) {
                       roomCheck=true;
                       //Check capacity of room
                       if(rooms.get(j).getCapacity()>=cnt) {
                           guestCntCheck=true;
                           //Date checking
                            Map<Date,Date> temp=rooms.get(j).getBookingDates();
                            if(temp.size()==0) {
                               bookings.add(new Booking(guests.get(i),rNum,cnt,in,out));
                               rooms.get(j).add(in,out);
                               System.out.println("Booked successfully!!!");
                               return;
                            }
                            else {
                               //Loop through each date
                               for(Date key:temp.keySet()) {
                                   if(key.compareTo(in)==0 || key.compareTo(in)>0) {
                                       if(key.compareTo(out)==0 || key.compareTo(out)<0) {
                                           System.out.println("Booking cancelled!!! Room is already booked");
                                           return;
                                       }
                                   }
                               }
                               bookings.add(new Booking(guests.get(i),rNum,cnt,in,out));
                               rooms.get(j).add(in,out);
                               System.out.println("Booked successfully!!!");
                               return;
                            }
                       }
                   }
               }
           }
       }
       //Error messages
       if(!guestCheck) {
           System.out.println("Booking cancelled!!!Guest id "+id+" not present in register");
       }
       else if(!roomCheck) {
           System.out.println("Booking cancelled!!!Room number "+rNum+" not present in register");
       }
       else if(!guestCntCheck) {
           System.out.println("Booking cancelled!!!Capacity of room is less than requirement");
       }
   }
   //Method to view by guests
   public static void viewByGuest(ArrayList<Booking>bookings) {
       System.out.println("\nEnter guest id: ");
       int id=sc.nextInt();
       boolean check=false;
       for(int i=0;i<bookings.size();i++) {
           if(bookings.get(i).getId()==id) {
               System.out.println(bookings.get(i));
               check=true;
           }
       }
       if(!check) {
           System.out.println("Guest id "+id+" not found in the booking list!!!");
       }
   }
   //Method to view by rooms
       @SuppressWarnings("deprecation")
       public static void viewByRoom(ArrayList<Booking>bookings) {
           System.out.println("\nEnter room number: ");
           String rNum=sc.nextLine();
           boolean check=false;
           for(int i=0;i<bookings.size();i++) {
               if(bookings.get(i).getRoom().equalsIgnoreCase(rNum) && bookings.get(i).year()==new Date().getYear() ) {
                   System.out.println(bookings.get(i));
                   check=true;
               }
           }
           if(!check) {
               System.out.println("Room number "+rNum+" not found in the booking list!!!");
           }
       }
}

-------------------------------------------------------------------------------------------------

Output

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-1

Enter name of the guest: Macheal Garner

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-2

Enter room number: 101
Enter capacity of the room:
2

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-2

Enter room number: 102
Enter capacity of the room:
4

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-3

Enter Guest Id: 2
Enter room number: 101
Enter count of the guests: 2
Enter check in date in (dd-mm-yyyy): 14-05-2015
Enter check out date in (dd-mm-yyyy): 14-06-2015
Booking cancelled!!!Guest id 2 not present in register

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-3

Enter Guest Id: 1
Enter room number: 103
Enter count of the guests: 2
Enter check in date in (dd-mm-yyyy): 14-02-2019
Enter check out date in (dd-mm-yyyy): 16-02-2019
Booking cancelled!!!Room number 103 not present in register

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-3

Enter Guest Id: 1
Enter room number: 101
Enter count of the guests: 3
Enter check in date in (dd-mm-yyyy): 14-02-2019
Enter check out date in (dd-mm-yyyy): 16-02-2019
Booking cancelled!!!Capacity of room is less than requirement

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-3

Enter Guest Id: 1
Enter room number: 101
Enter count of the guests: 2
Enter check in date in (dd-mm-yyyy): 14-02-2019
Enter check out date in (dd-mm-yyyy): 16-02-2019
Booked successfully!!!

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-4

VIEW TWO WAYS:-
a. View guest bookings, or b. View room bookings
a

Enter guest id:
1
Guest Name: Macheal Garner,   Room Number: 101,   Guest count: 2,   CheckIn Date: Mon Jan 14 00:02:00 IST 2019,   CheckOut Date: Wed Jan 16 00:02:00 IST 2019

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-4

VIEW TWO WAYS:-
a. View guest bookings, or b. View room bookings
a

Enter guest id:
2
Guest id 2 not found in the booking list!!!

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-4

VIEW TWO WAYS:-
a. View guest bookings, or b. View room bookings
b

Enter room number:
101
Guest Name: Macheal Garner,   Room Number: 101,   Guest count: 2,   CheckIn Date: Mon Jan 14 00:02:00 IST 2019,   CheckOut Date: Wed Jan 16 00:02:00 IST 2019

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-4

VIEW TWO WAYS:-
a. View guest bookings, or b. View room bookings
b

Enter room number:
102
Room number 102 not found in the booking list!!!

OPTIONS:-
1.) Add a guest
2.) Add a room
3.) Add a booking
4.) View bookings
5.) Quit
Enter your option:-5

****GOOD BYE***