getDisplayName(): This method is available in java.util.Locale class of Java.
Syntax:
String java.util.Locale.getDisplayName(Locale inLocale)
This method takes one argument of type Locale as its parameter. This method returns a name for the locale that is appropriate for display to the user.
Note: If the language, script, country, and variant fields are all empty, this function returns the empty string.
Parameters: One parameter is required for this method.
inLocale: The locale for which to retrieve the display name.
Returns: The name of the locale appropriate to display.
Throws: NullPointerException - if inLocale is null.
For Example:
Locale locale = new Locale("en", "USA")
Locale inLocale = new Locale("fr", "FR")
Approach 1: When inLocale is not null.
Java
import java.util.Locale;public class LocalegetDisplayName2 {public static void main(String[] args) {Locale locale = new Locale("en", "USA");Locale inLocale = new Locale("fr", "FR");System.out.println(locale.getDisplayName(inLocale));}}
Output:
anglais (USA)
Approach 2: When inLocale is null.
Java
import java.util.Locale;public class LocalegetDisplayName2 {public static void main(String[] args) {Locale locale = new Locale("en", "USA");Locale inLocale = null;System.out.println(locale.getDisplayName(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.getDisplayName(Locale.java:2022)
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