> For AI agents: the complete documentation index is available at https://nhanbe.id.vn/llms.txt, the full documentation bundle is available at https://nhanbe.id.vn/llms-full.txt.

# Java Notes

Practical notes on Java fundamentals, modern language features, backend development, testing, and the tools used around the JVM ecosystem.

## Main topics

- [Beginner's Guide](https://nhanbe.id.vn/java/beginners-guide/01-introduction.md)
- [Streams and Collectors](https://nhanbe.id.vn/java/java-streams.md)
- [Modern Java Features](https://nhanbe.id.vn/java/modern-java-features.md)
- [Optionals](https://nhanbe.id.vn/java/optionals.md)
- [Generics](https://nhanbe.id.vn/java/generics.md)
- [Functional Interfaces](https://nhanbe.id.vn/java/functional-interfaces.md)
- [Concurrency](https://nhanbe.id.vn/java/concurrency.md)
- [Collections](https://nhanbe.id.vn/java/collections.md)
- [Error Handling](https://nhanbe.id.vn/java/error-handling.md)
- [HTTP Clients](https://nhanbe.id.vn/java/http-clients.md)
- [JSON Processing](https://nhanbe.id.vn/java/json-processing.md)
- [Dependency Injection](https://nhanbe.id.vn/java/dependency-injection.md)
- [Maven](https://nhanbe.id.vn/java/maven.md)
- [Logging](https://nhanbe.id.vn/java/logging.md)
- [Testing](https://nhanbe.id.vn/java/testing.md)