JAVA

An electronics store wants to implement a system to allow its customers to view what electronic devices are on sale. The system should allow customers to view devices that are in stock. The system should also allow staff to view and add electronic devices for sale.

Draw a UML use case diagram to represent the actors and the use cases the actors are allowed to do.

Draw a UML class diagram of the classes that could be used in this solution, including relationships. Assume the electronic device has make, model and cost attributes. Assume that the staff and customer are two different types of users of the system and both have an id and name.