picocli VS clikt

Picocli allows using a compiler annotation processor to generate classes at compile time instead [0].

[0]: https://github.com/remkop/picocli/blob/main/picocli-codegen/...

Picocli is a pretty good one for writing CLI apps

"and there are simply no good command line input parsing libraries for Java."

Looks like author missed the most obvious and popular OSS one: https://picocli.info/

The command line example gave me the "ick". It is usually preferrable to parse the command line arguments into one instance of a custom "command class", rather than into a list of things. Like jcommander, picocli or jbock do.

Complex argument parsing needs to be auto-generated by libraries like picocli. Even if you need something custom, it'd be quicker to write an Annotation processor from scratch than editing that file.

https://github.com/remkop/picocli

"Picocli-based applications can be ahead-of-time compiled to a GraalVM native image, with extremely fast startup time and lower memory requirements, which can be distributed as a single executable file."

https://picocli.info/quick-guide.html

Using picocli to handle your command line options gives you the best chance to automatically generate an ArgumentCompleter script in the future, but won't help you today (other than possibly making your command line handling more standardized & easier).

Picocli

Then we released a JBang! and picocli based cli that would be, on any OS running a jvm runtime :

picocli : "a mighty tiny command line interface"

Have you tried either clikt or mosaic??

For most CLIs, Kotlin with https://ajalt.github.io/clikt/. Would consider Go if it's a small project where portability is important, but 90% still Kotlin

picoCLI is one of the many options available to you to create CLIs on the JVM. Other possibilities include Jakarta Commons CLI or Clikt if you're using Kotlin.

For CLI programs in Kotlin, I suggest taking a look at kotlinx-cli or, especially, Clikt, for idiomatic Kotlin code without annotations and such. Of course, after having already written the program, you're most likely not gonna switch that out, but I just wanted to inform you about that.

I would recommend https://github.com/ajalt/clikt which is somewhat similar to click from Python world, and is written in Kotlin and for Kotlin, in contrast to Java's picocli

To analyse the data, I again used Kotlin and combined 3 incredibly helpful tools: clikt, es-kotlin-client and plotly.kt. But more about that later.