JBang is an environment that lets you write Java programs with embedded dependencies and will run and compile directly without a build configuration tool like Maven or Gradle. It's very useful for scripting.
You can install JBang with SDKMan or Homebrew, and it will take care of JDK dependencies as well.
The reader.java script contains a simple version of the blacklite reader and builds on top of the functionality.
The csvimport.java uses opencsv to write entries from a CSV file into Blacklite.