You can access text labels in Java code from standard Wicket localizers for a Web page, then access the text string using a key and a class name. The class name allows you to search the class resource hierarchy, which is the same as searching static Wicket text labels in HTML templates.
... } catch (Exception e) { LOG.error("# An error occurred while updating the consumer from friends list", e); error(getLocalizer().getString("update.friend.error", this)); } ...