LangTag (Nimbus LangTag 1.4.1 API)

java.lang.Object
- com.nimbusds.langtag.LangTag

All Implemented Interfaces:: ReadOnlyLangTag

public class LangTag
extends Object
implements ReadOnlyLangTag

Language tag according to RFC 5646.

Supports normal language tags. Special private language tags beginning with "x" and grandfathered tags beginning with "i" are not supported.

To construct a new language tag from scratch:

 // English as used in the United States
 LangTag tag = new LangTag("en");
 tag.setRegion("US");

 // Returns "en-US"
 tag.toString();

To parse a language tag:

 // Chinese, Mandarin, Simplified script, as used in China
 LangTag tag = LangTag.parse("zh-cmn-Hans-CN");

 // Returns "zh"
 tag.getPrimaryLanguage();

 // Returns "cmn"
 tag.getExtendedLanguageSubtags()[0];

 // Returns "zh-cmn"
 tag.getLanguage();

 // Returns "Hans"
 tag.getScript();

 // Returns "CN"
 tag.getRegion();

See RFC 5646.

Constructor Summary

Constructors
Constructor and Description
`LangTag(String primaryLanguage)` Creates a new simple language tag.
`LangTag(String primaryLanguage, String... languageSubtags)` Creates a new extended language tag.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object object)` Overrides `Object.equals()`.
`String[]`	`getExtendedLanguageSubtags()` Gets the extended language subtags.
`String[]`	`getExtensions()` Gets the extensions.
`String`	`getLanguage()` Gets the language (primary language plus extended language subtags).
`String`	`getPrimaryLanguage()` Gets the primary language.
`String`	`getPrivateUse()` Gets the private use.
`String`	`getRegion()` Gets the region.
`String`	`getScript()` Gets the script.
`String[]`	`getVariants()` Gets the variants.
`int`	`hashCode()` Overrides `Object.hashCode()`.
`static LangTag`	`parse(String s)` Parses the specified string representation of a language tag.
`void`	`setExtensions(String... extensions)` Sets the extensions.
`void`	`setPrivateUse(String privateUse)` Sets the private use.
`void`	`setRegion(String region)` Sets the region.
`void`	`setScript(String script)` Sets the script.
`void`	`setVariants(String... variants)` Sets the variants.
`String`	`toString()` Returns the canonical string representation of this language tag.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - LangTag
```
public LangTag(String primaryLanguage)
        throws LangTagException
```
    Creates a new simple language tag.
    Use for simple language tags such as "en" (English), "fr" (French) or "pt" (Portuguese).
    
    Parameters:
    
    primaryLanguage - The primary language, as the shortest two or three-letter ISO 639 code. Must not be null.
    
    Throws:
    
    LangTagException - If the primary language syntax is invalid.
  - LangTag
```
public LangTag(String primaryLanguage,
               String... languageSubtags)
        throws LangTagException
```
    Creates a new extended language tag.
    Use for extended language tags such as "zh-cmn" (Mandarin Chinese) or "zh-yue" (Cantonese Chinese).
    
    Parameters:
    
    primaryLanguage - The primary language, as the shortest two or three-letter ISO 639 code. May be null if the subtags are sufficient to identify the language.
    
    languageSubtags - One or more extended language subtags, as three-letter ISO 639-3 codes. null if none.
    
    Throws:
    
    LangTagException - If the primary or extended language syntax is invalid.
- Method Detail
  - getLanguage
```
public String getLanguage()
```
    Description copied from interface: ReadOnlyLangTag
    Gets the language (primary language plus extended language subtags).
    See RFC 5646 section 2.2.1.
    Examples:
```
 en
 de
 zh-cmn
 cmn
 
```
    Specified by:
    
    getLanguage in interface ReadOnlyLangTag
    
    Returns:
    
    The language, consisting of the primary and/or extended language subtags.
  - getPrimaryLanguage
```
public String getPrimaryLanguage()
```
    Description copied from interface: ReadOnlyLangTag
    
    Gets the primary language.
    See RFC 5646 section 2.2.1.
    
    Specified by:
    
    getPrimaryLanguage in interface ReadOnlyLangTag
    
    Returns:
    
    The primary language, as a two or three-letter ISO 639 code, in canonical lower case format.
  - getExtendedLanguageSubtags
```
public String[] getExtendedLanguageSubtags()
```
    Description copied from interface: ReadOnlyLangTag
    
    Gets the extended language subtags.
    See RFC 5646 section 2.2.2.
    
    Specified by:
    
    getExtendedLanguageSubtags in interface ReadOnlyLangTag
    
    Returns:
    
    The extended language subtags, as three-letter ISO 639-3 codes. null if none.
  - getScript
```
public String getScript()
```
    Description copied from interface: ReadOnlyLangTag
    
    Gets the script.
    See RFC 5646 section 2.2.3.
    
    Specified by:
    
    getScript in interface ReadOnlyLangTag
    
    Returns:
    
    The script, as an ISO 15924 code, in canonical title case format. null if not defined.
  - setScript
```
public void setScript(String script)
               throws LangTagException
```
    Sets the script.
    See RFC 5646 section 2.2.3.
    
    Parameters:
    
    script - The script, as a four-letter ISO 15924 code. null if not defined.
    
    Throws:
    
    LangTagException - If the script syntax is invalid.
  - getRegion
```
public String getRegion()
```
    Description copied from interface: ReadOnlyLangTag
    
    Gets the region.
    See RFC 5646 section 2.2.4.
    
    Specified by:
    
    getRegion in interface ReadOnlyLangTag
    
    Returns:
    
    The region, as a two-letter ISO 3166-1 code or a three-digit UN M.49 code. null if not defined.
  - setRegion
```
public void setRegion(String region)
               throws LangTagException
```
    Sets the region.
    See RFC 5646 section 2.2.4.
    
    Parameters:
    
    region - The region, as a two-letter ISO 3166-1 code or a three- digit UN M.49 code. null if not defined.
    
    Throws:
    
    LangTagException - If the region syntax is invalid.
  - getVariants
```
public String[] getVariants()
```
    Description copied from interface: ReadOnlyLangTag
    
    Gets the variants.
    See RFC 5646 section 2.2.5.
    
    Specified by:
    
    getVariants in interface ReadOnlyLangTag
    
    Returns:
    
    The variants. null if not defined.
  - setVariants
```
public void setVariants(String... variants)
                 throws LangTagException
```
    Sets the variants.
    See RFC 5646 section 2.2.5.
    
    Parameters:
    
    variants - The variants. null if not defined.
    
    Throws:
    
    LangTagException - If the variant syntax is invalid.
  - getExtensions
```
public String[] getExtensions()
```
    Description copied from interface: ReadOnlyLangTag
    
    Gets the extensions.
    See RFC 5646 section 2.2.6.
    
    Specified by:
    
    getExtensions in interface ReadOnlyLangTag
    
    Returns:
    
    The extensions. null if not defined.
  - setExtensions
```
public void setExtensions(String... extensions)
                   throws LangTagException
```
    Sets the extensions.
    See RFC 5646 section 2.2.6.
    
    Parameters:
    
    extensions - The extensions. null if not defined.
    
    Throws:
    
    LangTagException - If the extension syntax is invalid.
  - getPrivateUse
```
public String getPrivateUse()
```
    Description copied from interface: ReadOnlyLangTag
    
    Gets the private use.
    See RFC 5646 section 2.2.7.
    
    Specified by:
    
    getPrivateUse in interface ReadOnlyLangTag
    
    Returns:
    
    The private use. null if not defined.
  - setPrivateUse
```
public void setPrivateUse(String privateUse)
                   throws LangTagException
```
    Sets the private use.
    See RFC 5646 section 2.2.7.
    
    Parameters:
    
    privateUse - The private use. null if not defined.
    
    Throws:
    
    LangTagException - If the extension syntax is invalid.
  - toString
```
public String toString()
```
    Description copied from interface: ReadOnlyLangTag
    
    Returns the canonical string representation of this language tag.
    
    Specified by:
    
    toString in interface ReadOnlyLangTag
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    The canonical string representation.
  - hashCode
```
public int hashCode()
```
    Overrides Object.hashCode().
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    The object hash code.
  - equals
```
public boolean equals(Object object)
```
    Overrides Object.equals().
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    object - The object to compare to.
    
    Returns:
    
    true if the objects have the same value, otherwise false.
  - parse
```
public static LangTag parse(String s)
                     throws LangTagException
```
    Parses the specified string representation of a language tag.
    
    Parameters:
    
    s - The string to parse. May be null.
    
    Returns:
    
    The language tag. null if the string was empty or null.
    
    Throws:
    
    LangTagException - If the string has invalid language tag syntax.

Class LangTag

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

LangTag

LangTag

Method Detail

getLanguage

getPrimaryLanguage

getExtendedLanguageSubtags

getScript

setScript

getRegion

setRegion

getVariants

setVariants

getExtensions

setExtensions

getPrivateUse

setPrivateUse

toString

hashCode

equals

parse