In the last article I introduced JSAP, the command line parser from 2006. Now it is time for Commons CLI from Apache from the year 2009. And this is the last part of this article series.
Although today web and rich client applications are in mostly, sometimes you end up creating a simple command line tool which does not need any graphical user interface (perhaps developing the UI costs you more time than writing the application itself). And to enable configuration of your application you are likely to add command line arguments. If you want the input to be more elastic you can add named (or qualified) arguments but parsing them would be an extra utility.
For this I’ll introduce a new article series in two parts about Java command line argument parsers. In the first article (so this one) I’ll have a look at JSAP from Martian Software, in the second I’ll introduce Commons CLI from Apache. Both of the tools is old (last update from JSAP was in 2006, from CLI in 2009). This is because there is not much about releasing newer version for command line argument parsing because once done there are rarely changes how the argument should be parsed.