Java Locale getUnicodeLocaleKeys() Method

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Description

The Java Locale getUnicodeLocaleKeys() method returns the set of Unicode locale keys defined by this locale, or the empty set if this locale has none. The returned set is immutable. Keys are all lower case.

Declaration

Following is the declaration for java.util.Locale.getUnicodeLocaleKeys() method

public Set<String> getUnicodeLocaleKeys()

Parameters

NA

Return Value

This method returns the set of Unicode locale keys, or the empty set if this locale has no Unicode locale keywords.

Exception

NA

Getting Unicode Locale Keys from a Locale Example

The following example shows the usage of Java Locale getUnicodeLocaleKeys() methods. We're creating a locale with a key as "co" which is retrieved using getUnicodeLocaleKeys and printed.

package com.tutorialspoint;

import java.util.Locale;

public class LocaleDemo {
   public static void main(String[] args) {

      // create a new locale
	   Locale locale = Locale.forLanguageTag("de-DE-u-email-co-phonebk-x-linux");

      // print this locale
      System.out.println("Locale:" + locale);

      // print the set of keys of this locale
      System.out.println("keys:" + locale.getUnicodeLocaleKeys());
   }
}

Output

Let us compile and run the above program, this will produce the following result −

Locale:de_DE_#u-email-co-phonebk-x-linux
Keys:[co]