The CAS Web application includes a number of localized message files:

  • English (US)
  • Spanish
  • French
  • Russian
  • Dutch (Nederlands)
  • Swedish (Svenskt)
  • Italian (Italiano)
  • Urdu
  • Chinese (Simplified)
  • German (Deutsch)
  • Japanese
  • Croatian
  • Czech
  • Slovenian
  • Polish
  • Portuguese (Brazil)
  • Turkish
  • Farsi
  • Arabic

In order to “invoke” a specific language for the UI, the /login endpoint may be passed a locale parameter as such:

Usage Warning!

Note that not all languages are complete and accurate across CAS server releases as translations are entirely dependent upon community contributions. For an accurate and complete list of localized messages, always refer to the English language bundle.


All message bundles are marked under messages_xx.properties files at src/main/resources. The default language bundle is for the English language and is thus called messages.properties. If there are any custom messages that need to be presented into views, they may also be formatted under custom_messages.properties files.

In the event that the code is not found in the activated resource bundle, the code itself will be used verbatim.

To see the relevant list of CAS properties, please review this guide and this guide.