1/12/2026 • 1 min read
Clean Architecture in Java
Structure Java systems for long-term maintainability and testability.
Clean architecture helps teams evolve software without rewriting core business rules.
Protect the domain
Business logic should be framework-independent and free from transport or persistence concerns.
Depend inward
Outer layers can depend on inner layers, but not the opposite. This keeps the core stable.
Use explicit boundaries
Define interfaces at boundaries and keep adapters thin. This simplifies testing and integration changes.
Favor intent-revealing code
Readable naming and small cohesive modules reduce onboarding time and production mistakes.
