February 2005
Intermediate to advanced
360 pages
7h 17m
English
Content preview from Apache Jakarta Commons: Reusable Java™ ComponentsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 13. CLI (Command-Line Interface)
The Apache Jakarta Commons CLI package is intended to assist in the creation of command-line applications. In conjunction with the String manipulation afforded by the Commons Lang package, aspiring developers could potentially create quite sophisticated console applications. This package takes care of the complexities of parsing incoming arguments, validating the arguments, and displaying help information.
In this chapter, a simple utility function (searching various paths for the location(s) of a particular class file) is first presented from a high level, then a command-line wrapper based on this utility using CLI is shown, and for completeness, the full implementation of the class search tool is presented. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.