getDisplayVariant(): This method is available in java.util.Locale class of Java.
Syntax:
String java.util.Locale.getDisplayVariant(Locale inLocale)
This method takes one argument of type Locale as its parameter. This method returns a name for the locale's variant code that is appropriate for display to the user.
Note: If the locale doesn't specify a variant code, this function returns the empty string.
Parameters: One parameter is required for this method.
inLocale: The locale for which to retrieve the display variant code.
Returns: The name of the display variant code appropriate to the given locale.
Throws: NullPointerException if inLocale is null.
Approach 1: When inLocale is not null.
Java
import java.util.Locale;public class LocalegetDisplayVariant2 {public static void main(String[] args) {Locale locale = new Locale("en", "USA", "US");Locale inLocale = new Locale("fr", "FR", "FR");System.out.println(locale.getDisplayVariant(inLocale));}}
Output:
US
Approach 2: When inLocale is null.
Java
import java.util.Locale;public class LocalegetDisplayVariant2 {public static void main(String[] args) {Locale locale = new Locale("en", "USA", "US");Locale inLocale = null;System.out.println(locale.getDisplayVariant(inLocale));}}
Output:
Exception in thread "main" java.lang.NullPointerException:Cannot invoke "Object.hashCode()" because "key" is null at java.base/java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936) at java.base/sun.util.locale.provider.JRELocaleProviderAdapter.getLocaleResources(JRELocaleProviderAdapter.java:387) at java.base/java.util.Locale.getDisplayVariant(Locale.java:1960)
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