HotelReservationSystem.java

package HotelDatabase;
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;

import javax.swing.*;

public class HotelReservationSystem extends JFrame {
	    /**
	 * 
	 */
	private static final long serialVersionUID = 1L;
		private JLabel CustomerNameLabel, roomTypeLabel, arrivalLabel, departureLabel;
	    private JTextField nameField, arrivalField, departureField;
	    private JComboBox<String> roomTypeComboBox;
	    private JButton submitButton;
	    private Hotel hotel;

	     public HotelReservationSystem() {
	        setTitle("ABC Hotel Booking System");
	        setSize(400, 300);
	        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	        setLocationRelativeTo(null);
	        hotel = new Hotel(10, 5, 3); // Example: 10 regular rooms, 5 deluxe rooms, 3 junior suites

	        CustomerNameLabel = new JLabel("Customer Name:");
	        nameField = new JTextField(20);

	        roomTypeLabel = new JLabel("Room Type:");
	        String[] roomTypes = {"Regular Room", "Deluxe Room", "Junior Suite"};
	        roomTypeComboBox = new JComboBox<>(roomTypes);

	        arrivalLabel = new JLabel("Arrival Date:");
	        arrivalField = new JTextField(10);

	        departureLabel = new JLabel("Departure Date:");
	        departureField = new JTextField(10);

	        submitButton = new JButton("Submit");
	        submitButton.addActionListener(e -> submitBooking());

	        JPanel panel = new JPanel();
	        panel.add(CustomerNameLabel);
	        panel.add(nameField);
	        panel.add(roomTypeLabel);
	        panel.add(roomTypeComboBox);
	        panel.add(arrivalLabel);
	        panel.add(arrivalField);
	        panel.add(departureLabel);
	        panel.add(departureField);
	        panel.add(submitButton);

	        add(panel);
	        setVisible(true);
	    }

	     private void submitBooking() {
	    	    String customerName = nameField.getText();
	    	    String roomType = (String) roomTypeComboBox.getSelectedItem();
	    	    String arrivalDate = arrivalField.getText();
	    	    String departureDate = departureField.getText();
	    	 
	    	    // Validate input
	    	    if (customerName.isEmpty() || roomType.isEmpty() || arrivalDate.isEmpty() || departureDate.isEmpty()) {
	    	        JOptionPane.showMessageDialog(this, "Please fill in all fields.", "Error", JOptionPane.ERROR_MESSAGE);
	    	        return;
	    	    }
	    	    
	    	    // Parse dates in yyyy-MM-dd
	    	    LocalDate arrival = LocalDate.parse(arrivalDate);
	    	    LocalDate departure = LocalDate.parse(departureDate);
	    	    long numberOfNights = ChronoUnit.DAYS.between(arrival, departure);
	    	    
	    	    // Attempt to make a reservation
	    	    Room room = hotel.makeReservation(roomType, arrivalDate, departureDate);
	    	    if (room != null) {
	    	        double totalCharge = room.calculateTotalCharge((int) numberOfNights);
	    	        JOptionPane.showMessageDialog(this, "Reservation successful!\n" +
	    	                "Customer Name: " + customerName + "\n" +
	    	                "Room Type: " + roomType + "\n" +
	    	                "Arrival Date: " + arrivalDate + "\n" +
	    	                "Departure Date: " + departureDate + "\n" +
	    	                "Room Number: " + room.getRoomNumber() + "\n" +
	    	                "Total Charge: $" + totalCharge);
	    	    } else {
	    	        JOptionPane.showMessageDialog(this, "No rooms available for the selected dates.", "Error", JOptionPane.ERROR_MESSAGE);
	    	    }

	    	    // Here you would typically check room availability and store the booking
	    	    // For demonstration purposes, let's just print the booking details
	    	    System.out.println("Booking submitted:");
	    	    System.out.println("Customer Name: " + customerName);
	    	    System.out.println("Room Type: " + roomType);
	    	    System.out.println("Arrival Date: " + arrivalDate);
	    	    System.out.println("Departure Date: " + departureDate);

	    	    // Optionally, clear the fields after submission
	    	    nameField.setText("");
	    	    roomTypeComboBox.setSelectedIndex(0);
	    	    arrivalField.setText("");
	    	    departureField.setText("");
	     }
	     public static void main(String[] args) {
	    	Hotel hotel = new Hotel(10, 5, 3); // Create a hotel with 10 regular rooms, 5 deluxe rooms, and 3 junior suites

 	        // Example: Check if a Regular Room is available
 	        Room availableRoom = hotel.makeReservation("Regular Room", "2024-05-15", "2024-05-20");
 	        if (availableRoom != null) {
 	            System.out.println("Reservation successful for a Regular Room.");
 	        } else {
 	            System.out.println("No Regular Rooms available for the selected dates.");
 	        }
	     }
}