to-java-migration skillA
to-java-migration is agent-read markdown (skill) from openhands/extensions: Migrate COBOL code to idiomatic Java, preserving business logic while following Java best practices. Use for COBOL modernization projects..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
Migrate COBOL code to idiomatic Java, preserving all business logic. ## Code Style Requirements Write idiomatic Java, NOT literal COBOL translations: - Use Java conventions: camelCase names, standard collections (List, Map) - Use Java standard library instead of rolling your own - No god classes — split into cohesive, single-responsibility classes - No TODO comments or stub implementations — fully implement everything ## Robustness Requirements - Validate inputs at method entry (null checks, range validation) - Use try-catch for all I/O and external operations - Use try-with-resources for files, streams, connections - Handle errors gracefully with meaningful messages ## Configuration Requirements - No hardcoded file paths or credentials — use environment variables - No magic numbers — use named constants - Make limits and timeouts configurable ## Documentation Requirements - Add COBOL references: `// COBOL equivalent: BNK1CRA.cbl 145-167` - Document assumptions made during conversion - Add Javadoc to public methods ## Testing Requirements If test fixtures exist (see `cobol-build-setup` skill): - Create a JUnit test class for each migrated program …
Read the whole file at its exact version.
How to install
mdr add openhands/extensions/to-java-migration@git:20260306.cebd78bmdr add openhands/extensions/to-java-migration@sha256:59e8581f49351e9fPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_gm4ly64mzwh7smgr)
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Versions
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2089 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
openhands/extensions · 150 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gm4ly64mzwh7smgr GET https://markdownregistry.com/api/v1/resolve?ref=openhands/extensions/to-java-migration GET https://markdownregistry.com/api/v1/blob/59e8581f49351e9fa6e89ae76faa8a3c59bc014797f26cfa54769de4cd4c1970
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.