cal10n is not able to find my resource bundles. It keeps failing saying that it can't find my resource bundle... I've tried to understand the code, but it is not very easy to follow. It seems like it is using the @BaseName.value as the basename for the file, but it replaces '.' with '/' as if the basename would be a package. That sounds bad because if you refactor the class the @BaseName is in you would need to make sure it catches that text package reference. Anyway, I traced the problem down into CAL10NBundleFinderByProcessingFiler.getResource(). It uses StandardLocation.CLASS_OUTPUT... to look for the file. Then AbstractCAL10NBundleFinder.makePropertyResourceBundle() quietly swallows the exception that results when it can't find the resource bundle. So, I guess I'm asking, where do you put your resource bundle when you follow the example in the documentation: package com.foo.somePackage; import ch.qos.cal10n.LocaleData; import ch.qos.cal10n.Locale; import ch.qos.cal10n.BaseName; @BaseName("colors") @LocaleData( { @Locale("en_UK"), @Locale("fr") }) public enum Colors { BLUE, RED, YELLOW; } I've tried just putting 'colors_en_UK.properties' in the com.foo.somePackage directory, but that doesn't work because it looks for that file in <outputdir>/com/foo/somePackage and it isn't there. I put my resources in a separate folder called 'resources'. I didn't have that on my javac sourcepath, but I can add that to handle the cal10n annotation processing. However, StandardLocation.CLASS_OUTPUT would need to changed to StandardLocation.SOURCE_PATH. I debugged it and re-assigned the result to use SOURCE_PATH and it behaves like I felt that it should... Perhaps the CAL10NBundleFinderByProcessingFiler can search most/all of the StandardLocation.* places instead of just one? Anyway, it is late and I didn't want to tear up my codebase to figure out how to make it work, so I'm asking where we should put these things and what names should they be given... Thanks, Michael