@RestController // Adapter for Web public class WithdrawController private final WithdrawMoneyPort withdrawUseCase; // The Port
In 2021, the Java ecosystem was maturing with records, sealed classes, and pattern matching (previews). Most free PDF guides from that year focused on practical implementations using: // The Port In 2021
The hexagonal architecture is a design pattern that structures an application around a central business domain, surrounded by a set of ports and adapters. The ports define the interfaces through which the application interacts with the outside world, while the adapters implement these interfaces to connect to specific infrastructure components. // The Port In 2021
However, be aware of two changes since 2021: // The Port In 2021