AI Agent Now Debugging Flaky Tests in Java — JetBrains Unveils Breakthrough Tooling

JetBrains AI Agent Targets Flaky Tests — A New Era for Java Debugging

JetBrains has revealed a practical AI agent designed to triage and fix flaky tests in Java projects. The tool autonomously pinpoints root causes and proposes corrections, ending the era of developers chasing intermittent build failures.

“It’s all about pinpointing the actual root cause and proposing a fix, rather than leaving developers to chase intermittent red builds,” a JetBrains spokesperson explained. The agent represents a genuine leap in AI-assisted development, moving beyond code completion into reliable debugging territory.

The announcement came as part of a wider wave of AI integrations in the Java ecosystem, including BoxLang’s memory systems for RAG and JobRunr’s new ClawRunr agent.

Quarkus 3.35 Delivers JAR Tree-Shaking, PGO, and Emergency Security Patches

Quarkus 3.35 has shipped with significant performance upgrades: JAR tree-shaking reduces application size, Profile-Guided Optimization (PGO) speeds native images, and Semeru AOT support broadens deployment options. Emergency releases have also been issued to fix CVE-2026-39852 across all supported streams, urging immediate upgrades.

Hibernate Tools Moves to ORM, Eclipse Tooling Retires

In a structural shift, Hibernate Tools has merged into the Hibernate ORM project, marking the retirement of its standalone Eclipse tooling. Developers should migrate to the ORM-based workflow for ongoing support.

IntelliJ IDEA 2025.3.5 Released

JetBrains shipped IntelliJ IDEA 2025.3.5 with stability improvements. Meanwhile, JEP 533 (Structured Concurrency) and JEP 531 (Lazy Constants) are advancing in previews, signaling stronger concurrency and initialization control in future Java releases.

Security Fixes and Version Bumps

Emergency patches for Quarkus (CVE-2026-39852) lead a list of critical updates. WildFly 40 Beta introduces HashiCorp Vault integration. Jetty, Elasticsearch, Zuul, Grails, and Micronaut all published new versions. Developers should audit dependencies immediately.

Background

Flaky tests — tests that pass or fail unpredictably — have long plagued Java development, wasting engineering time and eroding confidence in CI/CD pipelines. AI tooling has slowly moved from simple code suggestions to autonomous debugging, but JetBrains’ approach goes further by isolating root causes and generating fixes without human intervention.

Quarkus 3.35 follows months of optimization work, while the CVE-2026-39852 vulnerability underscores the need for constant vigilance. The retirement of Eclipse-based Hibernate Tools signals a consolidation of tooling around the Hibernate ORM core.

What This Means

Developers can now offload one of the most tedious debugging tasks to an AI agent, freeing hours per week for higher-level design and feature work. The integration of tree-shaking and PGO in Quarkus directly reduces cloud costs and startup latency for production services.

However, the emergency security releases remind the community that speed to upgrade remains non-negotiable. With structured concurrency and lazy constants nearing finalization, Java’s concurrent programming model is becoming safer and more expressive. The ecosystem is entering a phase where AI handles the grunt work while the language itself becomes more robust.