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Java FFM: calling C without JNI using jextract v1.0.0

Use this resource to call a C library from Java or Kotlin without JNI

New

  • 549 downloads
  • 182 likes
  • 157 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install java-native-interop-ffm-api

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent writes calls to C libraries with the FFM API: Linker, MethodHandle, MemorySegment and Arena, declares structs and generates bindings with jextract. It covers the case of integrating with the operating system keyring. You get typed native calls, without hand-written JNI glue.

Mostly picked by

Updated November 2, 2026

Card for the “Java FFM: calling C without JNI using jextract” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: setup, MemorySegment and Arena
  • SKILL.md: calling a C function, loading libraries and structs
  • SKILL.md: upcalls, jextract generation and a keyring example

Good fit for

  • Your Java application must call an OS API or a C library
  • You want to avoid JNI for a native integration

Not for

    Tags

    • java
    • ffm
    • jextract
    • c interop

    About

    You say

    “Generate Java bindings with jextract for libsecret and write a call that reads a secret from the keyring.”

    Card for the “Java FFM: calling C without JNI using jextract” skill

    Skill published by claude-dev-suite under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to call a C library from Java or Kotlin without JNI
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md14.3 KB

    Origin and licence

    Listed unmodified

    Author
    claude-dev-suite
    Source
    github.com/claude-dev-suite/claude-dev-suite/tree/e10ab644ba43abe2abc923399226df4af7337214/skills/languages/java-foreign
    Licence
    MIT

    Notice

    « java-foreign » (claude-dev-suite, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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