Java.util.Locale Class in Java | Set 1

As the name suggests util.Locale Class is used to perform locale task and provides locale information for the user.
Declaration :

public final class Locale
   extends Object
   implements Cloneable, Serializable

Constructors :

  • Locale(String L) : Creates Locale form the given language code.
  • Locale(String L, String C) : Creates Locale form the given language, country code.
  • Locale(String L, String C, String V) : Creates Locale form the given language, country, variant code.

Methods:

  1. getDisplayCountry() : java.util.Locale.getDisplayCountry() return the country to which locale belongs to.
    Syntax :
    public final String getDisplayCountry()
    Parameters : 
    ----
    Return :
    -----
    
  2. getDefault() : java.util.Locale.getDefault() return the current – default value for the locale as per the JVM instance.
    Syntax :
    public static Locale getDefault()
    Parameters : 
    ----
    Return :
    current - default value for the locale as per the JVM instance.
    
  3. getCountry() : java.util.Locale.getCountry() return the country for the locale which could be empty or ISO 3166 2-letter code.
    Syntax :
    public String getCountry()
    Parameters : 
    ----
    Return :
    -----
    
  4. equals(Object locale2) : java.util.Locale.equals(Object locale2) checks whether two locales are equal or not.
    Syntax :
    public boolean equals(Object locale2)
    Parameters : 
    locale2 : another locale to be compare with.
    Return :
    returns true if two locales are equal, else false. 
    
  5. clone() : java.util.Locale.clone() creates clone of the locale.
    Syntax :
    public Object clone()
    Parameters : 
    ----
    Return :
    clone of this instance
    
  6. getAvailableLocales() : java.util.Locale.getAvailableLocales() returns array of all the installed locales.
    Syntax :
    public static Locale[] getAvailableLocales()
    Parameters : 
    ---
    Return :
    array of installed locales.
    
  7. getDisplayLanguage() : java.util.Locale.getDisplayLanguage() returns the language with the locale.
    Syntax :
    public final String getDisplayLanguage()
    Parameters : 
    ----
    Return :
    ---- 
    
  8. getDisplayLanguage(Locale in) : java.util.Locale.getDisplayLanguage(Locale in) returns the language localised according to “in” Locale if possible.
    Syntax :
    public String getDisplayLanguage(Locale in)
    Parameters : 
    in : the instance local
    Return :
    ---- 
    Exception :
    NullPointerException : if "in" is null.
    
  9. getDisplayName() : java.util.Locale.getDisplayName() displays name of the Locale
    Syntax :
    public final String getDisplayName()
    Parameters : 
    ----
    Return :
    -----------
    
  10. getDisplayLanguage(Locale in) : java.util.Locale.getDisplayLanguage(Locale in) returns the language of “in” locale.
    Syntax :
    public final String getDisplayLanguage()
    Parameters : 
    in : the instance local
    Return :
    ---- 
    
  11. getISO3Country() : java.util.Locale.getISO3Country() displays 3-letter abbreviation of Locale country.
    Syntax :
    public String getISO3Country()
    Parameters : 
    ----
    Return :
    -------------
    
    // Java Program illustrating the use of methods :
    // getDisplayCountry(), getCountry(), equal(), clone(),
    // getAvailableLocales(), getDefault(),
    // getDisplayLanguage(Locale in), getDisplayLanguage(),
    // getDisplayName(Locale in), getDisplayName(),
    // getISO3Country()
    import java.util.*;
    public class NewClass
    {
        public static void main(String[] args)
        {
            // Creting a new Locale
            Locale geek1 = new Locale("English", "IN");
    
            // Use of getDefault() :
            Locale geek2 = Locale.getDefault();
    
            System.out.println("Locale name : " + geek1);
            System.out.println("Locale name Default : " + geek2);
    
            // Use of getDisplayCountry() :
            System.out.println("\nCountry Name : "
                                + geek1.getDisplayCountry());
    
            // Use of getCountry() :
            System.out.println("Country Name ISO 3166 2-letter code : "
                                                + geek1.getCountry());
    
            // Use of equal() :
            System.out.println("\nIs geek1 equals geek2 : "
                                     + geek1.equals(geek2));
    
            // clone() : geek3 is a clone of geek2
            Locale geek3 = (Locale) geek2.clone();
    
            // Locale : geek3
            System.out.println("Locale geek3 same as geek2 : "
                                                    + geek3);
    
            // Use of getAvailableLocales()
            Locale[] geek4 = Locale.getAvailableLocales();
    
            // We are not printing all the locales.
            System.out.println("\nInstalled locales are : ");
            for (int i = 1; i < geek4.length/10; i++)
                System.out.println(i + ":" + geek4[i]);
    
            // Use of getDisplayLanguage() :
            System.out.println("\ngeek2 Language : "
                            + geek2.getDisplayLanguage());
    
            // Use of getDisplayLanguage(Locale in) :
            System.out.println("Language of in Locale : "
              + geek1.getDisplayLanguage(new Locale("France", "French")));
    
            // Use of getDisplayName :
            System.out.println("\nUse of getDisplayName : "
                                  + geek1.getDisplayName());
    
            // Use of getDisplayName(Locale in) :
            System.out.println("Name of in Locale : "
              + geek2.getDisplayName(new Locale("English", "english")));
    
            // Use of getISO3Country() :
            System.out.println("\nISO3 Country Name of geek3 : "
                                        + geek3.getISO3Country());
    
        }
    }
    

    Output :

    Locale name : english_IN
    Locale name Default : en_US
    
    Country Name : India
    Country Name ISO 3166 2-letter code : IN
    
    Is geek1 equals geek2 : false
    Locale geek3 same as geek2 : en_US
    
    Installed locales are : 
    1:ar_AE
    2:ar_JO
    3:ar_SY
    4:hr_HR
    5:fr_BE
    6:es_PA
    7:mt_MT
    8:es_VE
    9:bg
    10:zh_TW
    11:it
    12:ko
    13:uk
    14:lv
    15:da_DK
    
    geek2 Language : English
    Language of in Locale : english
    
    Use of getDisplayName : english (India)
    Name of in Locale : English (United States)
    
    ISO3 Country Name of geek3 : USA

Next: Java.util.Locale Class in Java | Set 2

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