Locale toLanguageTag() in Java

toLanguageTag(): This method is available in java.util.Locale class of Java.

Syntax:

String java.util.Locale.toLanguageTag()

This method returns a well-formed IETF BCP 47 language tag representing this locale.

Note: If this Locale has a language, country, or variant that does not satisfy the IETF BCP 47 language tag syntax requirements, this method handles these fields as described below.

Returns: a BCP47 language tag representing the locale.

For Example:

Locale locale = new Locale("en", "USA", "US")

locale.toLanguageTag()= > It returns en-x-lvariant-US.

Approach

Java

import java.util.Locale;

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

        Locale locale = new Locale("en""USA""US");

        System.out.println(locale.toLanguageTag());
    }
}

Output:

en-x-lvariant-US

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