# investigating-hms-internals

> Investigates HEC-HMS internals through decompiled Java classes. Provides JythonHms
API reference, CLI options, version-specific differences (3.x vs 4.x), and guides
on-demand decompilation for new discoveries. Use when debugging HMS behavior,
discovering undocumented features, understanding version differences, validating
automation approaches, or investigating HMS API capabilities. Includes complete
JythonHms method reference, Python 2 vs 3 syntax differences, and decompilation
tooling. Complements hms_doc_query (official docs) with internal implementation details.

Trigger keywords: decompile, HMS internals, JythonHms API, HMS version differences,
CLI options, undocumented, HMS jar, HMS classes, debugging HMS, HMS source code,
HMS 3.x support, Python 2 vs 3, HMS methods, HMS parameters.

- Author: William Mark Katzenmeyer, P.E., C.F.M.
- Repository: gpt-cmdr/hms-commander
- Version: 20260116032956
- Stars: 1
- Forks: 0
- Last Updated: 2026-02-06
- Source: https://github.com/gpt-cmdr/hms-commander
- Web: https://mule.run/skillshub/@@gpt-cmdr/hms-commander~investigating-hms-internals:20260116032956