Java Check Locale is available using Apache Commons Lang

In this Java tutorial we learn how to use the LocaleUtils class of Apache Commons Lang library to check if a given Locale object is existing on available installed locales.

How to add Apache Commons Lang 3 library to your Java project

To use the Apache Commons Lang 3 library in the Gradle build project, add the following dependency into the build.gradle file.

implementation 'org.apache.commons:commons-lang3:3.12.0'

To use the Apache Commons Lang 3 library in the Maven build project, add the following dependency into the pom.xml file.

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

To have more information about the Apache Commons Lang 3 library you can visit the library home page at commons.apache.org/proper/commons-lang/

How to check a Locale is available in Java

The Apache Commons Lang library provides the method LocaleUtils.isAvailableLocale() to check if a Locale object is existing in the list of available locales. You can learn how to use this method in the below example code.

CheckAvailableLocale.java

import org.apache.commons.lang3.LocaleUtils;

import java.util.Locale;

public class CheckAvailableLocale {
    public static void main(String... args) {
        Locale locale1 = new Locale("en");
        Locale locale2 = new Locale("abc");

        boolean result1 = LocaleUtils.isAvailableLocale(locale1);
        boolean result2 = LocaleUtils.isAvailableLocale(locale2);

        System.out.println("Locale " + locale1 + " available: " + result1);
        System.out.println("Locale " + locale2 + " available: " + result2);
    }
}

Locale en available: true
Locale abc available: false

Happy Coding 😊