Class LanguageCodeValidator

java.lang.Object

opennlp.tools.util.LanguageCodeValidator

public final class LanguageCodeValidator
extends Object

Validates language codes against ISO 639 standards.

Accepts:

• ISO 639-1 two-letter language codes (e.g., "en", "de")
• ISO 639-2/3 three-letter language codes (e.g., "eng", "deu")
• The special code "x-unspecified" used internally by OpenNLP

Valid codes are derived from Locale.availableLocales() plus additional ISO 639-2 bibliographic codes and "und" (undetermined).

See Also:

• ISO 639-3

Method Summary

Modifier and Type	Method	Description
static boolean	isValid(String languageCode)	Checks whether the given language code is a valid ISO 639 code.
static void	validateLanguageCode(String languageCode)	Validates the given language code and throws an IllegalArgumentException if it is not a recognized ISO 639 language code.

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

isValid

public static boolean isValid(String languageCode)

Checks whether the given language code is a valid ISO 639 code.

Parameters:

languageCode - The language code to check. Must not be null.

Returns:

true if the code is valid, false otherwise.

Throws:

IllegalArgumentException - if languageCode is null.

validateLanguageCode

public static void validateLanguageCode(String languageCode)

Validates the given language code and throws an IllegalArgumentException if it is not a recognized ISO 639 language code.

Parameters:

languageCode - The language code to validate. Must not be null.

Throws:

IllegalArgumentException - if the code is not a valid ISO 639 language code or is null.