Java command line parser with subcommands that have similiar options

Question

We develop a Java Cli application, that has sub-commands with similar options. It's like svn:

svn commit -m messsage --username ARG --password ARG
svn checkout -r HEAD --username ARG --password ARG

I mean that each subcommand has special arguments, and we have also global arguments, and we have some arguments that are relvant for some subcommands, but not for all.

Which command line arguments parser supports that requirements?

thank you.

This question is off-topic for Stack Overflow. Try SE software recommendations instead. — RealSkeptic
– RealSkeptic, Commented Jan 2, 2017 at 12:04
thank you. softwarerecs.stackexchange.com/questions/38519/… — Azriel Berger
– Azriel Berger, Commented Jan 2, 2017 at 13:16

Remko Popma · Accepted Answer · 2017-06-30 05:13:13Z

picocli supports nested subcommands to arbitrary depth.

The main command defines global options, each following level of nested commands can add options that only apply to that level.

CommandLine commandLine = new CommandLine(new MainCommand())
        .addSubcommand("cmd1", new ChildCommand1()) // 1st level
        .addSubcommand("cmd2", new ChildCommand2())
        .addSubcommand("cmd3", new CommandLine(new ChildCommand3()) // 2nd level
                .addSubcommand("cmd3sub1", new GrandChild3Command1())
                .addSubcommand("cmd3sub2", new GrandChild3Command2())
                .addSubcommand("cmd3sub3", new CommandLine(new GrandChild3Command3()) // 3rd
                        .addSubcommand("cmd3sub3sub1", new GreatGrandChild3Command3_1())
                        .addSubcommand("cmd3sub3sub2", new GreatGrandChild3Command3_2())
                                // etc
                )
        );

You may also like its usage help with ANSI styles and colors.

Usage help lists the registered subcommands in addition to options and positional parameters.

The usage help is easily customized with annotations.

annotation-based
git-style subcommands
nested sub-subcommands
strongly typed option parameters
strongly typed positional parameters
customizable type conversion
multi-value options
intuitive model for how many arguments a field consumes
fluent API
POSIX-style clustered short options
GNU style long options
allows any option prefix
ANSI colors in usage help
customizable usage help
single source file: include as source to keep your application a single jar

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