Java Spring Boot API Development: Clean Code Standards

Here are Clean Code Guidelines specifically tailored for a Java Spring Boot API project. These aim to ensure readability, maintainability, scalability, and adherence to best practices.

🔧 1. Project Structure :

Organize code into clear, modular layers:

src/main/java/com/yourapp
├── config           // Configuration classes
├── controller       // REST Controllers
├── dto              // Data Transfer Objects
├── entity           // JPA Entities
├── exception        // Custom Exceptions and Handlers
├── repository       // Spring Data JPA Repositories
├── service          // Business Logic
├── mapper           // MapStruct or manual mappers
└── util             // Utility/helper classes

✍️ 2. Naming Conventions :

• Use camelCase for variables and methods: getUserById()
• Use PascalCase for classes: UserController, UserService
• REST endpoints should be resource-based and plural: /api/users
• Avoid abbreviations: getCustomerDetails() is better than getCustDtl()

🚦 3. REST API Design :

• Use appropriate HTTP methods:
• GET → Read