JNA

Java Native Access (by java-native-access)

JNA Alternatives

Similar projects and alternatives to JNA

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better JNA alternative or higher similarity.

JNA reviews and mentions

Posts with mentions or reviews of JNA. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-12-10.
  • FFM (Foreign Function and Memory API) Goes Final
    3 projects | news.ycombinator.com | 10 Dec 2023
    As far as I understand it, with JNA, all calls into C code go through libffi: https://github.com/java-native-access/jna/blob/master/www/Fu...

    This means that every call sets up some libffi data structures and libffi uses this information to perform the native call. Likewise in the other direction for return values. With JNI (and Panama), Hotspot can directly emit the argument/return code a the call, not too dissimilar from what a C or C++ compiler would do. There is still some overhead from maintaining JVM invariants. For example, I think a thread blocked in an FFI call can still participate in a safepoint. But that applies to JNI as well.

  • Are there any Non-Mobile Kotlin Native libraries wrapping C libraries like libhidapi/opengl?
    3 projects | /r/Kotlin | 6 Aug 2022
    If you were prepared to go to the JVM you might try JNA. https://github.com/java-native-access/jna
  • How to create fundamental libraries for my language?
    2 projects | /r/ProgrammingLanguages | 22 Jul 2022
    Other good example, but for Java platform is JNA library. Do not mix it with Java's JNI, which is a bad example of how it could be done.
  • Does Java 18 finally have a better alternative to JNI?
    5 projects | dev.to | 11 Apr 2022
    The complexity of JNI has given rise to some community-driven libraries that make it simpler to do FFI in Java. Java Native Access (JNA) is one of them. It's built on top of JNI and at least makes FFI easier to use, especially as it removes the need to write any C binding code manually and reduces the chances of memory safety issues. Still, it has some of the disadvantages of being JNI-based and is slightly slower than JNI in many cases. However, JNA is widely used and battle-tested, so definitely a better option than using JNI directly.
  • JEP 419: Foreign Function and Memory API
    4 projects | news.ycombinator.com | 29 Mar 2022
    This is about calling into any native operating system APIs, as long as they are callable via C or C++ (which these days means "all" operating system APIs).

    JNI is somewhat harder to use, because you need custom glue on both sides of the border: Some custom classes in Java and some custom code on the C (and C++) side.

    This proposal would remove the need for the glue on the C side and would allow a pure java solution.

    Something like this has existed in third-party form for a while as JNA (https://github.com/java-native-access/jna), but now it's going to be built into the JRE itself (if the proposal passes through review)

  • Choosing Java as your language for a Machine Learning project
    2 projects | /r/java | 4 Nov 2021
    I use JNA https://github.com/java-native-access/jna , as you can write the entire interface in Java faster as well as easier without the need of messing with the complexities of JNI.
  • Creating GUI without framework or library
    2 projects | /r/learnjava | 14 Oct 2021
    This (still someone else's code) will give you access to low level operating system APIs. For example, this will let you interact directly with the Windows COM, which lets you define interfaces and implement them: https://github.com/java-native-access/jna
  • Obvious and possible software innovations nobody does
    8 projects | news.ycombinator.com | 19 Jun 2021
    JNA looks reasonable for accessing native code from Java: https://github.com/java-native-access/jna/blob/master/www/Ge...
  • Making Win32 APIs More Accessible to More Languages
    6 projects | news.ycombinator.com | 23 Jan 2021
    I was the de facto maintainer of JNA (https://github.com/java-native-access/jna) win32 bindings for years. The API metadata is welcome - we have always based all work on header files in the visual studio / windows SDK. Now there’s a change to generate that code - someone might want to try to replace hand crafted mappings in JNA with generated ones - there’s a huge test suite to work with.
  • Advanced AI
    3 projects | /r/rotp | 18 Jan 2021
    In case you have existing low level code in C/C++ and you want to integrate it with Java, there's https://github.com/java-native-access/jna But it's fairly unwieldy to work with, and calls Java=>C carry an overhead, so you want as few of them as possible. Which in ROTP means you want to transport all the relevant data into your AI code, then do the processing on a handful of calls, then return the result. Alternatively, an option would be to export say savegame (or other data) as JSON, run your AI module as a separate process, and then write the results to another file. While ROTP at the moment cannot do JSON save games, I have begun looking into it.
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Stats

Basic JNA repo stats
22
8,231
7.8
11 days ago
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