Room.java

public class Room {
    private int roomNumber;
    private double pricePerNight;

    public Room(int roomNumber, double pricePerNight) {
        this.roomNumber = roomNumber;
        this.pricePerNight = pricePerNight;
    }
    public double calculateTotalCost(int nights) {
        return (pricePerNight * nights);
    }

    public double getPricePerNight() {
        return pricePerNight;
    }

    public int getRoomNumber() {
        return roomNumber;
    }

    public void setPricePerNight(double pricePerNight) {
        this.pricePerNight = pricePerNight;
    }

    public void setRoomNumber(int roomNumber) {
        this.roomNumber = roomNumber;
    }
}