Uses of Package
Model

Packages that use Model

Package	Description
Controller	The Controller package contains classes that handle the control and logic of the application.
Model	The Model package contains classes that represent the data and business logic of the application.
View	The View package contains classes related to the user interface (UI) of the application.

Classes in Model used by Controller

Class	Description
Customer	The Customer class represents a customer in the utility management system.
ServiceType	The `ServiceType` enum represents various types of utility services, each with its associated unit charges and service charges.
UtilityBill	The UtilityBill class represents a utility bill associated with a specific customer.
WrittenBills	The WrittenBills class represents a collection of utility bills stored in a file.

Classes in Model used by Model

Class	Description
ServiceType	The `ServiceType` enum represents various types of utility services, each with its associated unit charges and service charges.
UtilityBill	The UtilityBill class represents a utility bill associated with a specific customer.
WrittenBills	The WrittenBills class represents a collection of utility bills stored in a file.

Classes in Model used by View

Class	Description
Customer	The Customer class represents a customer in the utility management system.
ServiceType	The `ServiceType` enum represents various types of utility services, each with its associated unit charges and service charges.
UtilityBill	The UtilityBill class represents a utility bill associated with a specific customer.