Locale getISO3Language() in Java

getISO3Language(): This method is available in java.util.Locale class of Java.

Syntax:

String java.util.Locale.getISO3Language() throws MissingResourceException

This method returns a three-letter abbreviation of this locale's language. If the language matches an ISO 639-1 two-letter code, the corresponding ISO 639-2/T  three-letter lowercase code is returned.

Returns: A three-letter abbreviation of this locale's language.

Throws: MissingResourceException - if three-letter language abbreviation is not available for this locale.

For Example:

Locale locale = new Locale("en", "IN")

locale.getISO3Language() = > It returns eng.

Approach 1: When 3-letter language code is found.

Java

import java.util.Locale;

public class LocalegetISO3Language {
    public static void main(String[] args) {

        Locale locale = new Locale("en", "IN");

        System.out.println(locale.getISO3Language());
    }
}

Output:

eng

Approach 2: When 3-letter language code not found.

Java

import java.util.Locale;

public class LocalegetISO3Language {
    public static void main(String[] args) {

        Locale locale = new Locale("engg", "IN");

        System.out.println(locale.getISO3Language());
    }
}

Output:

Exception in thread "main" java.util.MissingResourceException: 
   Couldn't find 3-letter language code for engg
	at java.base/java.util.Locale.getISO3Language(Locale.java:1752)