This page discusses how to switch the Aptana Studio interface to a different langauge, such as Japanese or Chinese
You can change the language of the user interface to a different language than what your operating system uses by default. Follow the instructions below to change the language of the UI. Note that while a reasonable percentage of the core UI may be translated, items like Titanium-specific features have not, so they will appear in English.
You can do either of the following to change the language of your user interface:
Add the option (see below for language options):
Studio recognizes the following language abbreviations, though most won't actually have translations available: http://download.oracle.com/javase/1.5.0/docs/guide/intl/locale.doc.html#util-text
if you'd like to help with translation, join the Eclipse Babel project.