Package Singletons

package Singletons

Classes

Class	Description
AppointmentFilter	Filters appointments based on doctor, patient, date, and status Uses the builder pattern to allow for optional parameters
AppointmentManager	Singleton class to manage appointments and schedules
InputManager	Singleton class to manage user input
InventoryManager	Singleton class to manage the inventory and replenishment requests
SelectionResult<T>
UserLoginManager	A singleton class that manages the list of registered users