Java Reference
In-Depth Information
DISPLAY LOCALE: en_US
FORMAT LOCALE: es_MX
Good morning!, 19/09/11 08:31 PM
DEFAULT LOCALE: en_US
DISPLAY LOCALE: en_US
FORMAT LOCALE: en_US
Good morning!, 9/19/11 8:31 PM
How It Works
The
Locale
class allows you to set the default locale for two different categories. The
categories are represented by the
Locale.Category
enumeration:
•
Locale.Category.DISPLAY
•
Locale.Category.FORMAT
Use the
DISPLAY
category for your application's user interface. Setting the default
DISPLAY
locale means that the
ResourceBundle
class can load user interface re-
sources for that particular locale independently from the
FORMAT
locale. Setting the
FORMAT
default locale affects how the various
Format
subclasses behave. For ex-
ample, a default
DateFormat
instance will use the
FORMAT
default locale to create a
locale-sensitive output format. Again, these two categories are independent, so you can
use different
Locale
instances for different needs.
In this recipe's sample code, the
Locale.setDefault(Locale.FRANCE)
method call sets the default system,
DISPLAY
, and
FORMAT
locales to
fr-FR
(French in France). This method always resets both the
DISPLAY
and
FORMAT
locales
to match the system locale. When creating a new resource bundle, the
Re-
sourceBundle
class uses the system locale by default. However, by providing a
Locale
instance argument, you tell the bundle to load resources for a specific locale.
For example, even though the system locale is
Locale.FRANCE
, you can specify a
DISPLAY
default locale and use that
DISPLAY
locale in your
Re-
sourceBundle.getBundle()
method call. For example, this code attempts to
load a language bundle for
es-MX
even though the system locale is still
Locale.FRANCE
:
