Group: GitHub Higher Kinded J
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1.Higher Kinded J Core6 usages

io.github.higher-kinded-j » hkj-core MIT

Core Higher-Kinded-J implementations: higher-kinded type simulations, monads and type classes, the Effect Path API, and optics for Java.
Last Release on Aug 1, 2026

2.Higher Kinded J API5 usages

io.github.higher-kinded-j » hkj-api MIT

Public API for Higher-Kinded-J: core interfaces for higher-kinded types (Kind, Functor, Applicative, Monad) and optics (Lens, Prism, Traversal, Iso).
Last Release on Aug 1, 2026

4.Higher Kinded J Annotations3 usages

io.github.higher-kinded-j » hkj-annotations MIT

Annotations for Higher-Kinded-J code generation, including optics (@GenerateLenses, @GeneratePrisms, @GenerateTraversals, @GenerateIsos) and data mapping.
Last Release on Aug 1, 2026
Client-side HTTP integration for Higher-Kinded-J - declarative HTTP clients that return Effect Paths and preserve the typed error channel across services
Last Release on Aug 1, 2026

6.Higher Kinded J Gradle Plugin1 usages

io.github.higher-kinded-j » hkj-gradle-plugin MIT

Gradle plugin that configures HKJ dependencies, preview features, and compile-time checks
Last Release on Aug 1, 2026
Annotation processor for Higher-Kinded-J that generates optics and data-mapping boilerplate for Java records and sealed interfaces.
Last Release on Aug 1, 2026
Spring Boot auto-configuration for Higher-Kinded-J - Automatic setup for functional programming patterns
Last Release on Aug 1, 2026

9.Higher Kinded J BOM

io.github.higher-kinded-j » hkj-bom MIT

Bill of Materials for Higher-Kinded-J, managing versions of all HKJ modules
Last Release on Aug 1, 2026

10.Higher Kinded J Checker

io.github.higher-kinded-j » hkj-checker MIT

Compile-time Path type mismatch detection for Higher-Kinded-J
Last Release on Aug 1, 2026
Annotation processor plugins for Higher-Kinded-J providing traversal generators for optics code generation.
Last Release on Jul 31, 2026
Annotation processor that generates Higher-Kinded-J Effect-Path HTTP clients from @HkjHttpClient interfaces
Last Release on Aug 1, 2026
Spring Boot starter for Higher-Kinded-J - Functional programming patterns for Spring applications
Last Release on Aug 1, 2026

14.Higher Kinded J Test Assertions

io.github.higher-kinded-j » hkj-test MIT

Custom AssertJ assertions for Higher-Kinded-J types (Either, Maybe, Try, IO, etc.)
Last Release on Aug 1, 2026

15.Higher Kinded J

io.github.higher-kinded-j » higher-kinded-j MIT

Bringing Higher-Kinded Types to Java Functional Patterns
Last Release on Jun 12, 2025

16.Higher Kinded J Maven Plugin

io.github.higher-kinded-j » hkj-maven-plugin MIT

Maven plugin that configures HKJ dependencies, preview features, and compile-time checks
Last Release on Aug 1, 2026