Wpiutil jni 2026

[Raphdf201]

The wpiutil jni for 2026 is not in the maven repo yet (https://frcmaven.wpi.edu/ui/native/wpilib-mvn-release-local/edu/wpi/first/wpiutil/wpiutil-jni/)
will it be released some day ?

I need this because i am trying to access some data in the logs and i am too lazy to rewrite a wpilog reader (i am using the DataLogReader class).
When i try to run my program, it tells me the following and i think the jni libs can fix this

C:\Users\Public\wpilib\2026\jdk\bin\java.exe -jar .\build\libs\TechLogMerger-1.0-all.jar .\out\FRC_20260305_203712_BCVI_P2.wpilog .\out\FRC_20260305_211602_BCVI_P5.wpilog .\out\out.wpilog
java.io.IOException: wpiutiljni could not be loaded from path.
        attempted to load for platform /windows/x86-64/
Last Load Error: 
no wpiutiljni in java.library.path: C:\Users\Public\wpilib\2026\jdk\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files\National Instruments\Shared\OpenVINO\;C:\Program Files\Eclipse Adoptium\jdk-25.0.1.8-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\dotnet\;C:\ProgramData\chocolatey\bin;C:\ProgramData\ComposerSetup\bin;C:\Program Files\PowerShell\7\;C:\xampp\php;C:\Program Files\Calibre2\;C:\Program Files\Neovim\bin;C:\Program Files\GitHub CLI\;C:\Program Files\Gpg4win\..\GnuPG\bin;C:\Program Files\nodejs\;C:\Program Files\Docker\Docker\resources\bin;C:\Users\22220485\.cargo\bin;C:\Users\22220485\AppData\Local\pnpm;C:\Users\22220485\AppData\Local\Microsoft\WindowsApps;C:\Users\22220485\AppData\Local\JetBrains\Toolbox\scripts;C:\Users\22220485\AppData\Local\Programs\Git\cmd;C:\Users\22220485\AppData\Local\Programs\Git\bin;C:\Users\22220485\bin;C:\Users\22220485\AppData\Local\Microsoft\WinGet\Packages\JesseDuffield.lazygit_Microsoft.Winget.Source_8wekyb3d8bbwe;C:\Users\22220485\PScripts;C:\Program Files\7-Zip;C:\Users\22220485\AppData\Local\PowerToys\;C:\Users\22220485\AppData\Roaming\npm;C:\Users\22220485\AppData\Local\Microsoft\WinGet\Links;C:\Users\22220485\.dotnet\tools;C:\Users\22220485\AppData\Local\Android\Sdk\platform-tools;C:\Users\22220485\.local\bin;C:\Users\22220485\AppData\Local\Python\bin;:\Users\22220485\AppData\Local\Python\pythoncore-3.14-64\Scripts;C:\Users\22220485\AppData\Local\Programs\Zed\bin;C:\Users\22220485\steamcmd;C:\Users\22220485\AppData\Local\Programs\ILSpy;C:\Users\22220485\AppData\Local\bin\NASM;C:\Users\Public\wpilib\2026\vscode;;.
JVM Location: C:\Users\Public\wpilib\2026\jdk\bin\java.exe
A common cause of this error is using a JVM with an incorrect MSVC runtime.
Ensure you are using the WPILib JVM (The current running JVM is listed above)
See https://wpilib.org/jvmruntime for more information

        at edu.wpi.first.util.RuntimeLoader.loadLibrary(RuntimeLoader.java:47)
        at edu.wpi.first.util.WPIUtilJNI.<clinit>(WPIUtilJNI.java:44)
        at edu.wpi.first.util.datalog.DataLogWriter.<init>(DataLogWriter.java:20)
        at edu.wpi.first.util.datalog.DataLogWriter.<init>(DataLogWriter.java:32)
        at net.raphdf201.techlogmerger.Main.mergeLogs(Main.java:67)
        at net.raphdf201.techlogmerger.Main.main(Main.java:25)

[ThadHouse]

All -jni artifacts have been removed for years. You can find the JNI binaries in the -cpp artifact, along with the dependency library the jni binary requires.

[Raphdf201]

should i use the static or dynamic artifacts ?

[ThadHouse]

You need to use the shared artifacts.

[Raphdf201]

i added the contents of this : https://frcmaven.wpi.edu/artifactory/release/edu/wpi/first/wpiutil/wpiutil-cpp/2026.2.2/wpiutil-cpp-2026.2.2-windowsx86-64.zip to my path, and now the jvm crashes
hs_err_pid22112.log
I have absolutely no clue on how to debug this. Here is the code if you want to look at it : https://github.com/Raphdf201/logMerger/

If i dont find the cause, i think i'll just write a reader/writer myself

[ThadHouse]

Are you using the WPILib JDK, or another one? The WPILib JDK is likely required, older non wpilib jdks likely have a bad msvc runtime that isn't new enough for WPILib.

[Raphdf201]

i am using the wpilib 2026 jdk
i also have the latest msvc installed

[Gold856]

You're writing to entries that don't exist. There's no start call for any entries. https://github.com/Raphdf201/logMerger/blob/master/src/main/java/net/raphdf201/techlogmerger/MergeLogs.java#L51