Subcommands that need to inspect the value of an inherited option can use the @ParentCommand annotation to get a reference to their parent command, and access the inherited option via the parent reference. Similarly, they often represent their workflows within the system which makes life easier for the users and also ensures the proper information is collected and processes followed. They may also have specific types of assessment they want to include.

With case sensitivity switched off, the same principle applies: multiple options whose names differ only in case cannot be registered in a command.

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Table 5. Pre-defined styles and colors that can be used in descriptions and headers using the @|STYLE1[,STYLE2]…​ text|@ notation Pre-defined Styles The @ParentCommand annotation introduced in picocli 2.2 makes it easy for subcommands to access their parent command options:

The field’s type refers to the class containing the options and positional parameters in the group. We annotate our command with the @org.springframework.stereotype.Component annotation so that Spring can autodetect it for dependency injection. Applications that call System.exit need to configure the exitCodeListHeading and exitCodeList annotation attributes. As of picocli 2.0, the convenience methods will automatically print usage help and version informationWhen overwritten options are allowed, the last specified value takes effect (the above input will set the port field to 8080) Parameters fields are applied to a command line argument if their index matches the argument’s position. In previous versions of picocli, the above command would accept input -x -y, and the value -y would be assigned to the x String field. Picocli 4.0 introduced a new interface picocli.CommandLine.IHelpCommandInitializable2 that provides custom help