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Picocli is a one-file framework for creating Java command-line applications with almost zero code. It supports a variety of command-line syntax styles including POSIX, GNU, MS-DOS and more. It generates highly customizable usage help messages that use ANSI colors and styles to contrast important elements and reduce the cognitive load on the user. Picocli-based applications can have command line TAB completion showing available options, option parameters, and subcommands, for any level of nested subcommands. 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. Picocli generates beautiful documentation for your application (HTML, PDF and Unix man pages). Another distinguishing feature of picocli is how it aims to let users run picocli-based applications without requiring picocli as an external dependency.
Features
- Picocli generates beautiful documentation for your application
- Picocli aims to be the easiest way to create rich command line applications that can run on and off the JVM
- Picocli makes it easy to follow Command Line Interface Guidelines
- Annotate your class and picocli initializes it from the command line arguments
- Convert the input to strongly typed values in the fields of your class
- Picocli also provides a programmatic API, separately from the annotations API
Project Samples
