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# Java binding
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## Build shared library
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### Prerequisites
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* Follow the instructions in the [README.md](../../README.md) to build blst.
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* `JAVA_HOME` environment variable is set to a JDK with an `include` folder containing a `jni.h`
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file.
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### Build
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```bash
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make build
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```
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This will install the shared library in `src/main/resources/ethereum/ckzg4844/lib` with a folder
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structure
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and name according to the preset selected (mainnet or minimal) and your OS.
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All variables which could be passed to the `make` command and the defaults can be found in
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the [Makefile](./Makefile).
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## Test
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```bash
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make test
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```
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## Benchmark
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JMH is used for benchmarking.
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See [CKZG4844JNIBenchmark.java](src/jmh/java/ethereum/ckzg4844/CKZG4844JNIBenchmark.java) for more
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information.
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```bash
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make benchmark
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```
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## Library
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The library which uses this binding and publishes a package to a public maven repo
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is [jc-kzg-4844](https://github.com/ConsenSys/jc-kzg-4844).
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