Introduction
Greetings,
After examining the code for your Hotel Reservation System project, I have pinpointed several areas where improvements can be made to boost efficiency, address specific errors and even some code improvements following SOLID design principles.
UML Diagram
Modified Code
Interfaces
Service
interface Service {
void setDetails();
int getTotalCost();
boolean getStatus();
}
Room
interface Room {
int getRate();
void setDetails(int rate, boolean wifi, boolean status);
boolean getStatus();
boolean getWifi();
void changeStatus();
}
Abstract Class
AbstractRoom
abstract class AbstractRoom implements Room {
protected int rate;
protected boolean wifi;
protected boolean status;
public int getRate() {
return rate;
}
public void setDetails(int rate, boolean wifi, boolean status) {
this.rate = rate;
this.wifi = wifi;
this.status = status;
}
public boolean getStatus() {
return status;
}
public boolean getWifi() {
return wifi;
}
public void changeStatus() {
this.status = !this.status;
}
}
Classes
StandartRoom
class StandardRoom extends AbstractRoom {
public StandardRoom() {
this.rate = 5000;
this.wifi = false;
this.status = true;
}
}
DeluxeRoom
class DeluxeRoom extends AbstractRoom {
public DeluxeRoom() {
this.rate = 7000;
this.wifi = true;
this.status = true;
}
}
SuperDeluxeRoom
class SuperDeluxeRoom extends AbstractRoom {
public SuperDeluxeRoom() {
this.rate = 9000;
this.wifi = true;
this.status = true;
}
}
LaundryService
class LaundryService implements Service {
private int type;
private int cost;
private int quantity;
private boolean status;
public LaundryService() {
this.type = 0;
this.cost = 0;
this.quantity = 0;
this.status = false;
}
@Override
public void setDetails() {
Scanner in = new Scanner(System.in);
System.out.println("Enter type of wash (1/2/3): ");
type = in.nextInt();
System.out.println("Enter quantity of clothes: ");
quantity = in.nextInt();
if (type == 1)
cost = 100;
else if (type == 2)
cost = 200;
else if (type == 3)
cost = 300;
else
cost = 0;
status = true;
}
@Override
public int getTotalCost() {
return quantity * cost;
}
@Override
public boolean getStatus() {
return status;
}
}
TransportationService
class TransportationService implements Service {
private int type;
private int cost;
private int quantity;
private boolean status;
public TransportationService() {
this.type = 0;
this.cost = 0;
this.quantity = 0;
this.status = false;
}
@Override
public void setDetails() {
Scanner in = new Scanner(System.in);
System.out.println("Enter type of transportation (1/2/3): ");
type = in.nextInt();
System.out.println("Enter number of people: ");
quantity = in.nextInt();
if (type == 1)
cost = 100;
else if (type == 2)
cost = 200;
else if (type == 3)
cost = 300;
else
cost = 0;
status = true;
}
@Override
public int getTotalCost() {
return quantity * cost;
}
@Override
public boolean getStatus() {
return status;
}
}
HRS_Main
public class HRS_Main {
private Room room;
private List<Service> services;
public HRS_Main(Room room) {
this.room = room;
this.services = new ArrayList<>();
}
public void addService(Service service) {
services.add(service);
}
public double calculateTotalCost() {
double totalCost = room.getRate();
for (Service service : services) {
totalCost += service.getTotalCost();
}
double gst = totalCost * 0.18;
return totalCost + gst;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
Room room = null;
System.out.println("Select room type (1: Standard, 2: Deluxe, 3: Super Deluxe): ");
int roomType = sc.nextInt();
switch (roomType) {
case 1:
room = new StandardRoom();
break;
case 2:
room = new DeluxeRoom();
break;
case 3:
room = new SuperDeluxeRoom();
break;
default:
System.out.println("Invalid room type selected.");
System.exit(0);
}
HRS_Main booking = new HRS_Main(room);
System.out.println("Do you want laundry service? (Y/N): ");
char laundryOption = sc.next().charAt(0);
if (laundryOption == 'Y' || laundryOption == 'y') {
Service laundryService = new LaundryService();
laundryService.setDetails();
booking.addService(laundryService);
}
System.out.println("Do you want transportation service? (Y/N): ");
char transportOption = sc.next().charAt(0);
if (transportOption == 'Y' || transportOption == 'y') {
Service transportationService = new TransportationService();
transportationService.setDetails();
booking.addService(transportationService);
}
double totalCost = booking.calculateTotalCost();
System.out.println("Total cost: " + totalCost);
System.out.println("**********Thank you for your visit.**********\n**********We hope to see you again!**********");
}
}
Introduction
Greetings,
After examining the code for your Hotel Reservation System project, I have pinpointed several areas where improvements can be made to boost efficiency, address specific errors and even some code improvements following SOLID design principles.
UML Diagram
Modified Code
Interfaces
Service
Room
Abstract Class
AbstractRoom
Classes
StandartRoom
DeluxeRoom
SuperDeluxeRoom
LaundryService
TransportationService
HRS_Main