Unable to run java annotation processor

Question

I am having troubles running my annotation processor from command line. The problem is that it works in Windows environment, but not on my linux installation.

My processor is located in a jar file (meta-validator.jar). I also added entry to META-INF/services/javax.annotation.processing.Processor containing fully qualified name of class of my processor.

I am trying to invoke annotation processor with this command:

javac -cp "./metadata-validator.jar; ... (path to annotations.jar etc.)" -processor xammt.validator.modules.ValidatorModule -proc:only " ... path to sources"

In Windows environment it just works (Windows 7 64bit Pro, JDK 1.7.xx), processor is found and process method is executed.

In my linux environment (Linux Mint 13 32bit -> basically Ubuntu 12.04, Oracle JDK 1.7) I get message:

error: Annotation processor 'xammt.validator.modules.ValidatorModule' not found
warning: Annotation processing without compilation requested but no processors were found.

Also without -processor switch I get the same warning (with other verbose stuff).

What could be causing this problem? I guess that my JDK on linux machine is installed correctly, because I am able to run/compile java applications without any problems.

Thanks for any advice.

EDIT: I have still no idea why this does not work. Funny thing is, that it works programmatically - I managed to invoke my annotation processor via Java Compiler API without problems (on both platforms), this is also better solution because of debugging.

EDIT2: Actual command:

javac -cp "./metadata-validator.jar;./lib/common-library.jar;./Annotation source.jar" 
-processor xammt.validator.modules.ValidatorModule -proc:only "SourceFile.java"

SOLVED: check http://en.wikipedia.org/wiki/Classpath_(Java)#OS_specific_notes

Jeff Putney · Accepted Answer · 2012-12-18 12:58:07Z

4

On Linux are you using colon instead of semicolon as your class path separator? Include the Linux command you are executing as well.

Change the semi-colons to colons in the classpath and it should work.

Like this:

javac -cp "./metadata-validator.jar:./lib/common-library.jar:./Annotation source.jar" -processor xammt.validator.modules.ValidatorModule -proc:only "SourceFile.java"

edited Dec 18, 2012 at 12:58

answered Dec 18, 2012 at 4:38

Jeff Putney

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3 Comments

Jeff Putney Over a year ago

Unless the problem is in fact the use of the wrong path separator. If so, then that's the answer.

Brand88 Over a year ago

Thanks a lot, I had no idea.

dieend Over a year ago

you just saved my life

Ricardo Pardini · Accepted Answer · 2013-01-08 22:19:18Z

1

I also found out that the version of OpenJDK 7 included in Debian Wheezy (7u3) simply does not work with annotation processors. I did a custom build of OpenJDK 7u9 (from Ubuntu Quantal) and it works perfectly.

I reported a bug in Debian's bugtracker: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=697658

edited Jan 8, 2013 at 22:19

answered Jan 8, 2013 at 2:44

Ricardo Pardini

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