Issue with an automatic module
Alan Bateman
Alan.Bateman at oracle.com
Tue Aug 2 14:10:46 UTC 2016
On 02/08/2016 06:19, Peter Levart wrote:
> Hi,
>
> Top-package (unnamed package) classes can not be referenced from
> classes in named packages anyway, so they usually represent just
> reflective entry points (such as Main class with main() method). If a
> jar is used as an automatic module, it would probably be safe to just
> ignore any classes that appear in the jar at the top-level. Maybe this
> way there would be less grief in trying to use such jars as automatic
> modules than by rejecting them.
The concern is that it gives the impression that a module can have a
type in the unnamed package. If it is the main class then `java -m
nar.maven.plugin/HelpMojo` will fail for example. I concede of course
that at some cases will be just mistakes where someone has included some
classes in the top-level directory by accident.
(Note that the main class scenario has an another issue where it's
possible for a JAR file to have a Main-Class attribute that named a
class in the unnamed package as the main class. Known problem that will
resolve itself once the builder API is overhauled).
-Alan
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