Reusing module name token `*` in -d

Remi Forax forax at
Sun Jan 22 14:50:30 UTC 2017

$javac -X
        Warnings to enable or disable, separated by comma.
        Precede a key by - to disable the specified warning.
        Supported keys are:
          all                  Enable all warnings
          auxiliaryclass       Warn about an auxiliary class that is hidden in a source file, and is used from other files.
          cast                 Warn about use of unnecessary casts.
          classfile            Warn about issues related to classfile contents.
          deprecation          Warn about use of deprecated items.
          dep-ann              Warn about items marked as deprecated in JavaDoc but not using the @Deprecated annotation.
          divzero              Warn about division by constant integer 0.
          empty                Warn about empty statement after if.
          exports              Warn about issues regarding module exports.
          fallthrough          Warn about falling through from one case of a switch statement to the next.
          finally              Warn about finally clauses that do not terminate normally.
          module               Warn about module system related issues.
          options              Warn about issues relating to use of command line options.
          overloads            Warn about issues regarding method overloads.
          overrides            Warn about issues regarding method overrides.
          path                 Warn about invalid path elements on the command line.
          processing           Warn about issues regarding annotation processing.
          rawtypes             Warn about use of raw types.
          removal              Warn about use of API that has been marked for removal.
          serial               Warn about Serializable classes that do not provide a serial version ID. 
                             Also warn about access to non-public members from a serializable element.
          static               Warn about accessing a static member using an instance.
          try                  Warn about issues relating to use of try blocks (i.e. try-with-resources).
          unchecked            Warn about unchecked operations.
          varargs              Warn about potentially unsafe vararg methods
          none                 Disable all warnings


----- Mail original -----
> De: "Stephan Herrmann" <stephan.herrmann at>
> À: jigsaw-dev at
> Envoyé: Dimanche 22 Janvier 2017 15:25:57
> Objet: Re: Reusing module name token `*` in -d

> On 01/22/2017 02:50 PM, Remi Forax wrote:
>> interesting !
>> It's now a warning that you can exclude with @SuppressWarnings("module"):
>>   src/main/java/foo/ warning: [module] module not found: baz
>>   exports foo to baz;
> >                  ^
> JLS @SuppressWarnings:
> "Compiler vendors should document the warning names they support in conjunction
>  with this annotation type. Vendors are encouraged to cooperate to ensure that
>  the same names work across multiple compilers."
> looking forward to seeing this happen,
> Stephan
>> Rémi
>> ----- Mail original -----
>>> De: "Robert Scholte" <rfscholte at>
>>> À: jigsaw-dev at
>>> Envoyé: Samedi 21 Janvier 2017 20:12:37
>>> Objet: Re: Reusing module name token `*` in -d
>>> On Sat, 21 Jan 2017 19:35:28 +0100, Stephan Herrmann
>>> <stephan.herrmann at> wrote:
>>>> On 01/21/2017 06:52 PM, forax at wrote:
>>>>> Robert,
>>>>> How do you compile these 2 modules with Maven ?
>>>>> module foo {
>>>>>   exports foo to bar;
>>>>> }
>>>>> module bar {
>>>>>   requires foo;
>>>>> }
>>>>> when compiling 'foo' javac needs to see if 'bar' exists and when
>>>>> compiling 'bar', javac will ask to see 'foo'.
>>>> I don't think so:
>>>> "It is permitted for the to clause of an exports or opens statement to
>>>> specify a module which is not observable."
>>>> [lang-vm.html 1.1.2 - 2017/1/9]
>>>> I assume this will eventually (when??) become part of JLS, right?
>>>> cheers,
>>>> Stephan
>>> Confirmed. I've added an integration-test to the maven-compiler-plugin,
>>> works as expected. No need for cross reference dependencies.
>>> thanks,
> >> Robert

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