These samples use the official immudb Java client (immudb4j).
Besides what exists here, you can find additional code snippets and examples in:
- SDKs API documentation page
- immudb4j Unit Tests
Please note that you need to have access to an immudb server in order to be able to use these examples.
But that's very easy: just take a look at running immudb to know how to download and run it locally.
immudb4j is published at Maven Central.
Further details on installing it as a dependency can be found in immudb4j repo itself.