Can MINERVA access programs written in conventional programming languages?

Yes - via the Java interface, using Javas "JNI" functionality. Please refer to the MINERVA-to-Java interface description and the JNI documentation of your Java language processor if you need to link existing conventional-language object programs into MINERVA.

However, JNI access is inherently not portable across platforms. It incurs machine-specifics, OS-specifics, and Java-implementation dependencies and severely restricts client side deployability.

Therefore MINERVA does not provide direct access to JNI.