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Asked: 2026-06-01T00:55:49+00:00

I have Java application which sends pointer to function (callback) to some native dll

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I have Java application which sends pointer to function (callback) to some native dll kernel.
I use xfunction library for manipulations with the native code. I have to handle int* pointer as an array of integers within callback body. In fact, I have com.excelsior.xFunction.Pointer object. I need to make some tricks for transforming com.excelsior.xFunction.Pointer => int [] array.
Can JNA library help (using com.sun.jna.Pointer, IntByReference)?

For example, com.excelsior.xFunction.Pointer => com.sun.jna.Pointer => int [] array.
I don’t want to rewrite code in order to eliminate calls to xfunction.

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  1. Editorial Team

    XFunction does not seem to give the ability to fetch back the native pointer. Since it’s not opensourced and their falgship product is a Java obfuscator I think you’re stuck and won’t be able to do com.excelsior.xFunction.Pointer => com.sun.jna.Pointer.

    So, as they say ( http://www.excelsior-usa.com/xfunction.html ) :

    We […] encourage you to look first at JNA

    I think you’d better to recode this part of your app in full JNA to do what you want … or stick with XFunction

    Anyway, if you manage to find a way to fetch back XFunction’s native pointer just cast it to a Java long and pass it to JNA’s new com.sun.jna.Pointer(long) and then just do
    a com.sun.jna.Pointer.getIntArr(offset,arrayLength) to fetch back the array in pure Java

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