Java Swing extra locales library

Java Swing standard library has several UI parts with labels such as File Chooser, Color Chooser, Option dialogs, etc.

Java only supports a limited number of genuine translations.

Table 1. Supported UI translations on Java Runtime

Language	Locale ID
Chinese (Simplified)	zh_CN
Chinese (Traditional)	zh_TW
English	en
French	fr
German	de
Italian	it
Japanese	ja
Korean	ko
Portuguese (Brazillian)	pt_BR
Spanish	es
Swedish	sv

origin: https://www.oracle.com/java/technologies/javase/java9locales.html#translation

Supported extra locales

The library supports the following languages;

Language	Locale ID
Arabic	ar
Catalan	ca
Russian	ru
Ukrainian	uk

You are welcome to contribute the localization.

Working in translation

Language	Locale ID
Afrikaans	af
Bahasa Indonesia	id
Latovian	lv
Lithuanian	lt
Mongolian	mn
Romanian	ro

Development status

The library is currently under active development, it is considered as a BETA state.

Translation project

You can reach to the translation project at https://translate.codeberg.org/projects/java-swing-extra-locales/ It allows you to correct and update translations, and to add further languages to be supported.

Here is a list of calls translators.

Language	Locale ID
Afrikaans	af
Bahasa Indonesia	id
Latovian	lv
Lithuanian	lt
Mongolian	mn
Romanian	ro

How to use

Basic application which does not handle LookAndFeel

Call org.omegat.swing.extra.ExtraLocales.initialize() once before starting GUI parts. It automatically detects a system locale from "user.language" system properties. When the locale is supported by the library, the library load translations into Java runtime through javax.swing.UIManager.

ExtraLocales.initialize() register the library own LookAndFeel that wrap the application LaF that overrides standard GUI dialogs messages.

Advanced application that tweak LookAndFeel

Use org.omegat.swing.extra.ExtraLocales.setDefaults(UIDefaults uiDefauls) function. It returns UIDefaults object with localized strings overrides.

How to contribute translations

1. Add or update basic_xx.properties and gtk_xx.properties bundle file under src/main/resources/org/omegat/swing/extra
2. Update the ExtraLocales.supported constant array.

License and copyright

This library is distributed under GPL-2 license with Class Path exception. Some parts of the project are deliverables of org.omegat:lib-mnemonics and netbeans project. Source resource bundles are copied from OpenJDK project.

Copyright 2004-2005 Maxym Mykhalcuk 2024 Hiroshi Miura 2024 the OmegaT project