Alibaba Cloud Developer

Dec 23, 2025 · Backend Development

How We Leveraged JVM Agents and JaCoCo to Clean Up Legacy Java Code

This article explains how a long‑standing Java backend service was instrumented with JVM agents and JaCoCo to collect execution coverage, visualize results in an IntelliJ IDEA plugin, and systematically remove dead code, improving maintainability while minimizing impact on production performance.