Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallJArgs is a compact, legacy Java library for parsing GNU-style command-line options. Its main historical API, jargs.gnu.CmdLineParser, handles short and long options, option values, an explicit -- terminator, and leftover non-option arguments. The original project lists version 1.0, released on 12 April 2005, so it is best understood as a small parser rather than a modern, broadly maintained CLI framework.
What is JArgs in Java?
JArgs is an open-source suite of Java command-line option parsers. The original project describes it as a compact, documented package that initially provided GNU-style getopt compatibility. Its historical SourceForge project page identifies the license as BSD and version 1.0 as released on 12 April 2005. Project page
The name is not unique. Maven Central lists other artifacts named JArgs, including com.calincosma:jargs:1.0.2 and com.talanlabs:jargs:1.0.0. They are separate projects, not alternate coordinates for the original GNU-style parser. Check the group ID, description, license, and documentation before adding any JArgs dependency.
How does the historical CmdLineParser API work?
The core API is jargs.gnu.CmdLineParser. You define options using Option objects, pass the argument array to a parse operation, then query the parser with those option objects. The API offers helpers for boolean and string options, as well as ways to retrieve a single value or multiple values. API documentation
Recommended Free Tools
That design is different from parsers that identify options using string keys or annotations: the option object you define is also the key you use to retrieve its parsed value. The official project page links to examples, source, released files, and API documentation for this historical library. Project page
Does JArgs support long options, values, and --?
Yes. The Javadoc documents short options such as -v and long options such as --verbose. An option value can be supplied as a following argument, as in -d 2, or inline with a long option, as in --debug=2. The parser recognizes -- as the explicit end of option processing; subsequent arguments are treated as non-options.
Rank #2
After parsing, use the parser’s remaining-arguments facility to retrieve non-option arguments. This is useful when a command accepts both flags and positional inputs, such as a filename after its options. Consult the CmdLineParser Javadoc for the specific method signatures and option types available in the version you use.
What errors can CmdLineParser report?
The API defines exceptions for unknown options, illegal or missing option values, and malformed grouped short options. Handle parse failures at the command boundary: report which input was invalid, show concise usage guidance, and exit with an appropriate nonzero status rather than continuing with incomplete settings. Exact exception details and signatures are documented in the Javadoc.
Which Maven artifact is the original JArgs library?
The SourceForge project’s historical parser is identified by its package and API, especially jargs.gnu.CmdLineParser; the project page is the appropriate starting point for its official examples, source, release files, and documentation. Do not infer identity from the artifact name alone.
| Artifact | How its description differs | License stated on the Maven Central artifact page |
|---|---|---|
com.calincosma:jargs:1.0.2 |
Reads command-line arguments into a user-defined bean. | Apache 2.0 |
com.talanlabs:jargs:1.0.0 |
Described as “Simplify Main args.” | Apache 2.0 |
| Historical SourceForge JArgs | GNU-style option parser with jargs.gnu.CmdLineParser. |
BSD, as identified on the project page. |
The two Maven artifacts have different authors and descriptions from the historical SourceForge project. Their coordinates should not be substituted for the original library without verifying that their API fits your code. Maven Central: com.calincosma:jargs:1.0.2 · Maven Central: com.talanlabs:jargs:1.0.0
Rank #4
When is JArgs a reasonable choice?
JArgs may suit a small existing Java program that already depends on its API, or a project that specifically needs its GNU-style option model and has verified the source and release it will use. For a new project, weigh compatibility against maintenance and ecosystem needs: the original project’s stated release date is 2005, and the available evidence here does not establish current maintenance, adoption levels, or performance figures. Compare alternatives on option syntax, value and terminator behavior, API style, exception handling, release recency, license, and dependency availability.
Quick Recap
Best Value
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →
