Note 5: jt400Mri_xx_yy.jar contains translated messages, including strings contained in exception messages, dialogs, and output from other normal processing. In jt400Mri_lang_cntry.jar, lang = the ISO Language Code and cntry = the ISO Country Code used to translate the contained text. In some cases, the ISO Country Code is not used. Installing a particular national language version of the IBM Toolbox for Java licensed program on the iSeries installs the appropriate jt400Mri_lang_cntry.jar file. If the language is not supported, the install defaults to the English version, which is included in the IBM Toolbox for Java jar files.
You can add support for other languages by adding more than one of these jar files to the classpath. Java loads the correct string based on the current locale.