Are there good Java libraries that facilitate building interactive shell-style applications?

Question

I need to write a simple shell-style application in Java. It would be nice to use a library that takes care of parsing commands and takes care of things like flags and optional/mandatory parameters...

Something that has built-in TAB completion would be particularly great.

Answer 1

You can use JLine for editing and Apache Commons CLI for command line parsing.

Answer 2

BeanShell ?

Answer 3

I much prefer either JewelCLI or args4j over Apache Commons CLI.

There is a good, if somewhat inflammatory, roundup of several java CLI options parsers here.