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Importance of a Locale class in Java?

A Locale class is used to perform locale operations and supply locale information to the user. A Locale is defined as a set of parameters that represents a geographical location or place where some operation occurs. The important methods of Locale class are getAvailableLocales(), getCountry(), getDefault(), getDisplayLanguage(), getDisplayCountry(), getUnicodeLocaleKeys() etc.

The Locale class uses the following constructors:

  • Locale(String L): Initializes locale from the language code passed as an argument.
  • Locale(String L, String C): Initializes locale from the language, country code passed as arguments.
  • Locale(String L, String C, String V): Initializes locale from the language, country, variant passed as arguments.

Syntax

public final class Locale extends Object implements Cloneable, Serializable

Example

import java.text.SimpleDateFormat;
import java.util.Locale;
public class LocaleTest {
   public static void main(String[] args) {
      Locale loc[] = SimpleDateFormat.getAvailableLocales();
      for (int i=1; i <= 15; i++) {
         System.out.printf("\n%s (%s) ", loc[i].getDisplayName(), loc[i].toString());
      }
   }
}

Output

Arabic (United Arab Emirates) (ar_AE)
Arabic (Jordan) (ar_JO)
Arabic (Syria) (ar_SY)
Croatian (Croatia) (hr_HR)
French (Belgium) (fr_BE)
Spanish (Panama) (es_PA)
Maltese (Malta) (mt_MT)
Spanish (Venezuela) (es_VE)
Bulgarian (bg)
Chinese (Taiwan) (zh_TW)
Italian (it)
Korean (ko)
Ukrainian (uk)
Latvian (lv)
Danish (Denmark) (da_DK)