Intended usage of `java --dry-run`?

Andrew Guibert aguibert at
Tue Apr 11 16:13:53 UTC 2017

> From: Alan Bateman <Alan.Bateman at>
> To: Andrew Guibert/Rochester/IBM at IBMUS, jigsaw-dev <jigsaw-
> dev at>
> Date: 04/11/2017 10:00 AM
> Subject: Re: Intended usage of `java --dry-run`?
> On 11/04/2017 15:36, Andrew Guibert wrote:
> > :
> >
> > Based on these three use cases, either I'm using --dry-run incorrectly
> > (which isn't obvious if I am) or --dry-run is simply a placebo option.
> > main point of confusion comes from (what I believe to be) correct usage
> > --dry-run printing out usage info.
> I assume the reason that your examples print the usage message is
> because you haven't specified the main class (or `-jar` or `-m`).
> If you try an example such as `java --dry-run  -p <dir> -m <module>` it
> will load the main class from the initial module and exit at that point
> without invoking the main method.

Thanks for clarifying Alan.  I misunderstood the use case of --dry-run to
that it did not require any main class, but instead the point is to *load*
but not *execute* the main class.  Perhaps this would be worth clarifying
the option description?

- Andy

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