A solicitação
“Create a UML class diagram for a client that uses a singleton Logger with a static instance, a getInstance method and a log method.”
Depois, tenteAdd a LoggerFactory that returns the Logger.Add a private log level field to Logger.
O que há neste desenho
Entenda as decisões por trás dele.
01
Logger class with private instance and constructor
02
Static getInstance() method for controlled access
03
Client dependency on Logger through the static method
When a class must have exactly one instance, and a global point of access is needed (e.g., logging, configuration, thread pools).