I have just released the second version of the openbakery translation engine, which contains major feature enhancements:

• Added support for multiple properties files: Now all properties files for the given locale are searched for translations (important for larger projects).
• Better support for hierarchical locales: TranslationChecker now creates a list of indirectly defined translations.
• Multiple calls to initialize are now allowed: All translations from all referenced properties files are searched when translating a string.
• Enhanced output of TranslationChecker: It now tells you where it found a translation (the class or the properties file).

You can find a detailed example at the project page of openbakery translation.