InternshipKey terms and common mistakes
The words you will hear in Java Full Stack Development work and the mistakes that most often cost interns approvals.
Key terms
| Term | Meaning |
|---|---|
| Spring Boot | Opinionated Spring framework setup |
| Bean | Object managed by Spring |
@RestController | Controller returning JSON |
@Entity | Class mapped to a table |
@Valid | Triggers bean validation |
| Profile | Named set of configuration |
| SecurityFilterChain | Bean defining security rules |
| JUnit 5 | Java testing framework |
Common mistakes to avoid
- Putting business logic in controllers instead of services.
- Exposing JPA entities directly in API responses.
- Committing database passwords in application.properties.
- No tests for service methods.
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