works

README.md

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+# Minmax in Rust with JNI
+
+## How to build and run
+
+### Prerequisites
+- Gradle
+- Rust toolchain
+
+### Compile Rust code
+
+`cargo build`
+
+### Assemble shared library
+
+Copy the shared library in `target/debug/librs_wrapper.so` (or a `.dll` on windows) to a known location like the working directory or the system wide library directory.
+
+### Build the jar
+
+Use `./gradlew jar` or whatever you like I don't know.
+
+### Run the program
+
+Maybe it works now. If you get a link error you might need to set the `LD_LIBRARY_PATH` env var to the path of the shared library (on linux). Or you have to copy it to the systems library directory. Or something else. But it should work.