java.util.Currency methods with example

This class represents currency. Here, currency is identified by their ISO 4217 currency codes. The purpose of ISO 4217 is to establish internationally recognized codes for the representation of currencies. Currencies can be represented in the code in two ways: a three-letter alphabetic code and a three-digit numeric code.

                        util.Currency methods in Java
               /        /           |            \         \
  getCurrency   getInstance  getDisplayName   getSymbol   getDefaultFractionDigits

Some of the Currency class methods :

1. getCurrency() : java.util.Currency.getCurrency() method returns ISO 4217 currency code of the passed currency argument.
   Syntax :

   public String getCurrencyCode()
   Return : 
   ISO 4217 currency code of the passed argument.
   

2. getInstance() : java.util.Currency.getInstance() method creates currency instance for Currency code.
   Syntax :

   public static Currency getInstance(String cCode)
   Parameter : 
   cCode - ISO 4217 currency code of the passed currency argument
   Return : 
   currency instance for Currency code
   

3. getDefaultFractionDigits() : java.util.Currency.getDefaultFractionDigits() method returns default number of argumented currency fraction digits.
   Syntax :

   public int getDefaultFractionDigits()
   Return : 
   returns default number of argumented currency fraction digits.
   

4. getDisplayName() : java.util.Currency.getDisplayName() method generates the currency name of the argumented currency code.
   Syntax :

   public string getDisplayName()
   Return : 
   currency name of the argumented currency code
   

5. getSymbol() : java.util.Currency.getSymbol() method returns Currency symbol for the argumented currency code. In case, no symbol is returned normal currency code will be returned.
   Syntax :

   public String getSymbol()
   Return : 
   Symbol of the argumented currency code currency code.
   

Java code explaining getInstance(), getCurrencyCode(),getDefaultFractionDigits(), getDisplayName(), getSymbol() methods in Currency class

// Java program explaining Currency class methods
// getInstance(), getCurrencyCode(),getDefaultFractionDigits()
// getDisplayName(), getSymbol()
import java.util.*;
public class NewClass
{
    public static void main(String[] args)
    {
        // Use of getInstance() method to 'AUD' instance
        Currency c1 = Currency.getInstance("AUD"); //Australian Dollar
        Currency c2 = Currency.getInstance("JPY");  //Japan Yen
        Currency c3 = Currency.getInstance("USD");  //Japan Yen

        // Use of getCurrencyCode() method
        String cCode1 = c1.getCurrencyCode();
        String cCode2 = c2.getCurrencyCode();
        System.out.println("Australian Dollar code : " + cCode1);
        System.out.println("Japan Yen code : " + cCode2);
        System.out.println("");

        // Use of getDefaultFractionDigits() method
        int D1 = c1.getDefaultFractionDigits();
        System.out.println("AUD Fraction digits : " + D1);

        int D2 = c2.getDefaultFractionDigits();
        System.out.println("JPY fraction digits : " + D2);
        System.out.println("");

        // Use of getDisplayName() method
        System.out.println("AUD Display : "+c1.getDisplayName());
        System.out.println("JPY Display : "+c2.getSymbol());
        System.out.println("");

        // Use of getSymbol() method
        System.out.println("JPY Symbol : "+c2.getSymbol());
        System.out.println("USD Symbol : "+c3.getSymbol());

    }
}

Output:

Australian Dollar code : AUD
Japan Yen code : JPY

AUD Fraction digits : 2
JPY fraction digits : 0

AUD Display : Australian Dollar
JPY Display : JPY

JPY Symbol : JPY
USD Symbol : $

Refer the link for list of ISO 4217 Currency Codes :
http://www.xe.com/iso4217.php