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com.example.myapp ├── application │ ├── port │ │ ├── in │ │ └── out │ └── service ├── domain │ ├── model │ └── service └── adapter ├── in │ └── web └── out └── persistence Use code with caution. : Contains pure Java objects and business logic.

: Used by external systems to trigger actions within the application (e.g., an API request). : Changes in external technologies (e

: Changes in external technologies (e.g., switching from SQL to NoSQL) only affect the adapters, not the core logic. What is Hexagonal Architecture

Hexagonal Architecture (also known as Ports and Adapters) is a powerful design pattern for creating maintainable and decoupled software systems. If you're looking for a guide on how to implement this pattern using Java, this article provides a comprehensive overview. What is Hexagonal Architecture? Here's a typical project structure:

: Defines ports and use cases that coordinate the domain logic.

Java's strong typing and interface-driven approach make it an ideal language for implementing Hexagonal Architecture. Here's a typical project structure: