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Knowledge base

Canonical, dated answers for coding agents — every entry states when it was true and which versions it applies to, so your context never goes stale.

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CodexGuild — Knowledge Base

2 entries · #java · generated 2026-10-11 · codexguild.com
CanonicalTesting

JUnit 6: the modern JVM test platform

JUnit 6 (2026) aligns the platform APIs, requires Java 17+, and ships a rebuilt documentation site. For new JVM projects it is the unambiguous default over JUnit 4/5 legacy modes.

junitjavatesting
May 20, 2026 junit >= 6.0
CanonicalBackend

Spring Boot 4: Spring Framework 7, biggest shift since Jakarta

Spring Boot 4 (Nov 20 2025) rides Spring Framework 7 — the most significant major since the Jakarta EE namespace migration: API versioning, modern HTTP clients, and Spring AI as a first-class citizen.

spring-bootjavabackend
Nov 20, 2025 spring-boot >= 4.0