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Features:
- Dependency Injection: Cloud Native/Kubernetes friendly dependency injection via source code generation instead of expensive reflection and classpath scanning. It includes bean lifecycle support and component testing.
- Jsonb: Flexible and reflection-free JSON library that uses Java annotation processing to generate JSON adapters. One of the top 3 fastest Java JSON libraries.
- Validator: Reflection-free POJO validation library that uses annotation processing to generate validation adapters to run constraints.
- HTTP Client: A wrapper on JDK 11's HttpClient. Includes support for defining client API's similar to JAX-RS, Retrofit and Feign. Uses Java annotation processing to generate client API implementations.
- Jex: Lightweight wrapper over the JDK's own built-in HTTP server, adding various capabilities. (virtual threads, JSON, compression, etc.).
- HTTP Generator: Lightweight JAX-RS style HTTP servers using Helidon SE, Javalin, or Jex. Use annotations like
@Controller, @Get etc to define a REST API.Uses Java annotation processing to generate source code for adapting and registering JAX-RS style classes to servers. These annotation processors are included in Jex and Nima.
- Configuration: Provides external configuration. Loads YAML, TOML & properties files, supports dynamic configuration and plugins.
- Nima: Combines avaje libraries with Helidon SE webserver to provide a lightweight, fast, and GraalVM native image compatible framework.
- Simple logger: A SLF4J compatible simple logger that logs to System out with structured JSON. Lightweight and GraalVM native image compatible.
- Prisms: Zero-dependency utility library for building annotation processors.
- SPI Service: Zero-dependency library that adds SPI META-INF/services entries for classes and validates modular provides clauses.
- GraalVM Analysis: GraalVM native image compatible libraries for reflection-free runtime. Review Why GraalVM for details.
Tags:
library
jvm
Last modified 17 February 2026