Java properties

Extension
.properties
Import
yes
Export
yes

Properties are configuration values managed as key/value pairs. In each pair, the key and value are String values. The key identifies and is used to get the value, just as the variable name is used to get the value of a variable.

Documentation

Official Oracle manual
Preparing the .properties file for localization:

addTerm: Ajouter une traduction
cancel: Annuler
confirm: Confirmer
enterProjectName: Entrez le nom du projet
helloWorld: Bonjour le monde
hi: Bonjour
selectLanguage: Choisir la langue
settings: Param\u00E8tres