The setVariant(String) method of java.util.Locale.Builder class in Java is used to set this Locale.Builder to the specified variant. It means that this method will set the current variant of Locale.Builder instance to match the provided variant and return it. If the specified variant is null or empty, then the variant of this LocaleBuilder is removed. The specified variant is checked against the IETF BCP 47 variant subtag’s syntax requirements, after which is it normalized to lowercase.
Syntax:
public Locale.Builder setVariant(String variant)
Parameter: This method accepts the variant as a parameter which is the String that is to be set to this Locale.Builder instance.
Return Value: This method returns an Locale.Builder instance with the variant set of this Locale.Builder to the specified variant.
Exception: This method throws following Exceptions:
- IllformedLocaleException: if the specified variant has any ill formed fields
Program 1:
// Java program to demonstrate// the above method  import java.util.*;import java.util.Locale.*;  public class LocaleBuilderDemo {    public static void main(String[] args)    {          // Creating a new Locale.Builder        Locale.Builder localeBuilder            = new Builder();          // Displaying Locale.Builder        System.out.println("LocaleBuilder: "                           + localeBuilder);          // setting the variant of Locale.Builder        String variant            = (new Locale("nu", "NO", "NY"))                  .getDisplayVariant();        System.out.println("Setting the variant: "                           + variant);          localeBuilder            = localeBuilder.setVariant(variant);          // Displaying Locale.Builder        System.out.println("Updated LocaleBuilder: "                           + localeBuilder);    }} |
LocaleBuilder: java.util.Locale$Builder@232204a1 Setting the variant: Nynorsk Updated LocaleBuilder: java.util.Locale$Builder@232204a1
Program 2:
// Java program to demonstrate// the above method  import java.util.*;import java.util.Locale.*;  public class LocaleBuilderDemo {    public static void main(String[] args)    {          // Creating a new Locale.Builder        Locale.Builder localeBuilder            = new Builder();          // Displaying Locale.Builder        System.out.println("LocaleBuilder: "                           + localeBuilder);          // setting the variant of Locale.Builder        String variant = "asdasf@!vsd#";        System.out.println("Setting the variant: "                           + variant);                  try{        localeBuilder            = localeBuilder.setVariant(variant);          // Displaying Locale.Builder        System.out.println("Updated LocaleBuilder: "                           + localeBuilder);                           }        catch(Exception e)        {            System.out.println(e);            }    }} |
LocaleBuilder: java.util.Locale$Builder@232204a1 Setting the variant: asdasf@!vsd# java.util.IllformedLocaleException: Ill-formed variant: asdasf@!vsd# [at index 0]
Reference: https://docs.oracle.com/javase/9/docs/api/java/util/Locale.Builder.html#setVariant-java.lang.String-
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