Do you like ICU4J, Vaadin and Spring? Here comes the Add-on that will allow you to connect all three elements right together! This Add-on provides you with Spring MessageSource compatible wrapper of ICU4J MessageFormat that uses VaadinSession to obtain the Locale from current session. # Use ICU4J to boost the UX by speaking to the user more humanly // smart plural plural={0} {0, plural, one{car}other{cars}} // really smart plural plural={0} {0, plural, one{auto}few{auta} many{aut}other{aut}} // named parameters names={username}, you have {unread} unread messages of {total} // spell out numbers spellout={0, spellout} dollars And much more... See the ICU4J syntax options link.