What is LocaleUtils.languagesByCountry() in Java?

How to import `LocaleUtils`

The definition of LocaleUtils can be found in the Apache Commons Lang package, which we can add to the Maven project by adding the following dependency to the pom.xml file:

<dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.12.0</version>
</dependency>

For other versions of the commons-lang package, refer to the Maven Repository.

You can import the LocaleUtils class as follows.

import org.apache.commons.lang3.LocaleUtils;

Syntax

public static List<Locale> languagesByCountry(String countryCode)

Parameters

String countryCode: The two letter country code.

Return value

The method returns the languages supported by the given country.

import org.apache.commons.lang3.LocaleUtils;
public class Main{
    public static void main(String[] args){
        // Example 1
        String countryCode = "US";
        System.out.println("The list of languages supported by the country code " + countryCode + " are as follows:");
        System.out.println(LocaleUtils.languagesByCountry(countryCode));
        // Example 2
        countryCode = "OL";
        System.out.println("The list of languages supported by the country code " + countryCode + " are as follows:");
        System.out.println(LocaleUtils.languagesByCountry(countryCode));
        // Example 3
        countryCode = null;
        System.out.println("The list of languages supported by the country code " + countryCode + " are as follows:");
        System.out.println(LocaleUtils.languagesByCountry(countryCode));
    }
}

Expected output

The expected output of the code is as follows:

The list of languages supported by the country code US are as follows:
[lkt_US, es_US, en_US, haw_US, chr_US]
The list of languages supported by the country code OL are as follows:
[]
The list of languages supported by the country code null are as follows:
[]

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