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From Geertjan Wielenga <geertjan.wiele...@googlemail.com.INVALID>
Subject Re: Netbeans ant build script not finding Log4j2 V2.11.1 module-info.class
Date Wed, 03 Oct 2018 11:29:40 GMT
Well, I'd suggest to first get it to work without any tooling at all. I.e.,
forget NetBeans for the moment and use the command line to set up a simple
Java 9 multi-release app that makes use of Log4J. Possibly the problem is
with Log4J and that's what you can find out by creating such an application
and for help you could join the Log4J mailing list. I.e., if something
doesn't work outside NetBeans it won't work within NetBeans either.

Gj


On Wed, Oct 3, 2018 at 1:13 PM Emma Atkinson <emma.atkinson2@gmail.com>
wrote:

> Screenshot.png shows how I have set up Netbeans.  I think you can see
> everything.
>
> I normally use the *import* org.apache.logging.log4j.Logger and *import*
> org.apache.logging.log4j.LogManager.  The Log4j2 module-info.class file
> exports *org.apache.logging.log4j*.
>
> I have committed a version of the test case with the word logging
> deleted.  And then returned it to what I think is correct in the subsequent
> commit.
> I have tried it every way, with and without the classpath entries. BTW
> adding a jar to both the modulepath and classpath has been a bit hit and
> miss (ignoring adding log4j-api.jar if it is already on the modulepath) so
> I used a Library entry for the module path and explicitly added the jars to
> the classpath.
>
> Adding the classpath entries with
> *import* org.apache.logging.log4j.Logger
> *import* org.apache.logging.log4j.LogManager
>
> means the editor finds the classes Logger and LogManager as you would
> expect.
> The Compile File error message is that it cannot find the module
> log4j.api.
> https://github.com/cosmiczoo/Log4j2TestCase latest commit is as close as
> I can get.
>
>
> On Wed, 3 Oct 2018 at 11:15, Geertjan Wielenga
> <geertjan.wielenga@googlemail.com.invalid> wrote:
>
>> I also see this on https://logging.apache.org/log4j/2.0/download.html:
>>
>> To use Log4j 2 in your application make sure that both the API and Core
>> jars are in the application’s classpath. Add the dependencies listed below
>> to your classpath.
>>
>>
>>    1. log4j-api-2.11.1.jar
>>    2. log4j-core-2.11.1.jar
>>
>>
>>
>> In short, we need instructions for how exactly to set up the project to
>> match the environment that you have.
>>
>> Gj
>>
>>
>>
>>
>>
>> On Wed, Oct 3, 2018 at 12:11 PM Geertjan Wielenga <
>> geertjan.wielenga@googlemail.com> wrote:
>>
>>> Shouldn't the import statements be this:
>>>
>>> import org.apache.log4j.LogManager;
>>> import org.apache.log4j.Logger;
>>>
>>> ...and not this:
>>>
>>> import org.apache.logging.log4j.LogManager;
>>> import org.apache.logging.log4j.Logger;
>>>
>>> ...if you're using log4j-1.2-api-2.11.1.jar?
>>>
>>> Gj
>>>
>>>
>>> On Wed, Oct 3, 2018 at 11:56 AM Emma Atkinson <emma.atkinson2@gmail.com>
>>> wrote:
>>>
>>>> I cannot find a way to make this work, I hope you can help.  I should
>>>> be happy to be pointed to an existing answer
>>>>
>>>> *The Problem*
>>>> I have a very simple Java application demonstrating the problem I am
>>>> having with using the latest Log4j2 V2.11.1 as a module (log4j.api) and
>>>> building it in Netbeans.  The example compiles, builds and runs when I use
>>>> the classpath, but cannot compile the module-info.java file when I use the
>>>> modulepath. I have uploaded the code and Netbeans files at the following
>>>> link:
>>>>
>>>> https://github.com/cosmiczoo/Log4j2TestCase
>>>>
>>>> Log4j2 V2.11.1 is a Multi-release JAR (MR-JAR).  The module-info.class
>>>> file is in log4j-api-2.11.1.jar under the folder META-INF/versions/9, which
>>>> seems correct.
>>>>
>>>> The Netbeans editor can see the module log4j.api because it appears in
>>>> the drop-down menu of completion suggestions and does not have wiggly red
>>>> line under it.  My simple test program has a module-info.java file that
>>>> requires log4j.api and nothing else.  This bit works as I would expect.
>>>>
>>>>
>>>> I have located an unanswered question on StackOverflow asking a similar
>>>> question
>>>> https://stackoverflow.com/questions/50568139/netbeans-java-9-modules-log4j-2-11-module-not-found
>>>>
>>>>
>>>> *To Reproduce My Test *
>>>>
>>>> I *Clean* the project.  It completes successfully.
>>>> I then use a RMB option to *Compile File* the module-info.java file.
>>>> This generates an error pointing to the line *requires log4j.api* in
>>>> my module-info.java.
>>>>
>>>> <path-to>/Log4j2TestCase/src/module-info.java:7: error: module not
>>>> found: log4j.api
>>>>     requires log4j.api;
>>>> 1 error
>>>> ZipFileIndex clearCache failed
>>>> <path-to>/Log4j2TestCase/nbproject/build-impl.xml:1131: The following
>>>> error occurred while executing this line:
>>>> <path-to>/Log4j2TestCase/nbproject/build-impl.xml:358: Compile failed;
>>>> see the compiler error output for details.
>>>>     at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1425)
>>>>     at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:1133)
>>>>     at
>>>> org.netbeans.modules.java.source.ant.JavacTask.execute(JavacTask.java:120)
>>>>     at
>>>> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)
>>>>
>>>> and so on.  Please let me know if you want more.
>>>>
>>>> I have tried building this program under JDK-9, JDK-10 and JDK-11.  My
>>>> Netbeans runs on JDK-10.  I am learning how to migrate to modules by trial,
>>>> error and reading.  I may have made an error, but if I have, I don't know
>>>> where.
>>>>
>>>> Thanks in anticipation
>>>>
>>>> Emma
>>>>
>>>>
>>>>
>>>>

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