[tadfisher]

You can install a shutdown hook to do cleanup like this.

    Runtime.getRuntime().addShutdownHook(...)

[sedro]

That's how java.io.File#deleteOnExit works under the hood. The DLL is still loaded at that point and can't be deleted.

[tadfisher]

Ah, looking through the docs [1]; you have to use your own ClassLoader (so it can be garbage-collected), and statically-link with a JNI library which is unloaded when the ClassLoader is garbage-collected.

1: https://docs.oracle.com/en/java/javase/22/docs/specs/jni/inv...