What changed
IBM Research released a benchmark for multi-file Java modernization tasks where agents must migrate frameworks while preserving build behavior and passing repository tests.
Why it matters
Legacy modernization is a high-value coding-agent use case that requires dependency reasoning, coordinated edits and deterministic validation beyond isolated bug fixes.
What to do
Run one supported migration in an isolated fork, inspect build and test diffs and measure accepted completion, retries, review time and escaped issues.
Caveat
The benchmark covers selected Java frameworks and repositories, so results may not generalize to proprietary architectures or incomplete test suites.