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Java Source Code / Java Documentation » Science » jscience 4.3.1 » org.jscience.economics.money

Source Cross Reference Class Diagram Java Document (Java Doc)

org.jscience.economics.money .Currency

Currency

public class Currency extends DerivedUnit (Code)

This class represents a currency javax.measure.unit.Unit Unit . Currencies are a special form of DerivedUnit , conversions between currencies is possible if their respective exchange rates have been set and the conversion factor can be changed dynamically.

Quantities stated in Currency are usually instances of Money .

By default, the label associated to a currency is its ISO-4217 code (see the ISO 4217 maintenance agency for a table of currency codes). An application may change this default using the javax.measure.unit.UnitFormat.labelUnitFormat.label(String) method. For example:[code] UnitFormat.getStandardInstance().label(Currency.EUR, "€"); UnitFormat.getStandardInstance().label(Currency.GBP, "£"); UnitFormat.getStandardInstance().label(Currency.JPY, "¥"); UnitFormat.getStandardInstance().label(Currency.USD, "$"); [/code]

author:
   Jean-Marie Dautelle
version:
   3.0, February 13, 2006
See Also:   Currency.setExchangeRate

Field Summary
final public static Currency	AUD The Australian Dollar currency unit.
final public static Currency	CAD The Canadian Dollar currency unit.
final public static Currency	CNY The China Yan currency.
final public static Currency	EUR The Euro currency.
final public static Currency	GBP The British Pound currency.
final public static Currency	JPY The Japanese Yen currency.
final public static Currency	KRW The Korean Republic Won currency.
final public static Currency	TWD The Taiwanese dollar currency.
final public static Currency	USD The United State dollar currency.

Constructor Summary
public	Currency(String code) Creates the currency unit for the given currency code.

Method Summary
public boolean	equals(Object obj)
public String	getCode() Returns the currency code for this currency. the ISO-4217 code of the currency (e.g.
public int	getDefaultFractionDigits() Returns the default number of fraction digits used with this currency unit.
public double	getExchangeRate() Returns the exchange rate for this Currency .
public static Currency	getReferenceCurrency() Returns the currency used as reference when setting the exchange rate.
public Unit<? super Money>	getStandardUnit()
public int	hashCode()
public void	setExchangeRate(double refAmount) Sets the exchange rate of this Currency relatively to the reference currency.
public static void	setReferenceCurrency(Currency currency) Sets the reference currency (context-local).
public UnitConverter	toStandardUnit()

Field Detail

AUD
final public static Currency AUD(Code)
	The Australian Dollar currency unit.

CAD
final public static Currency CAD(Code)
	The Canadian Dollar currency unit.

CNY
final public static Currency CNY(Code)
	The China Yan currency.

EUR
final public static Currency EUR(Code)
	The Euro currency.

GBP
final public static Currency GBP(Code)
	The British Pound currency.

JPY
final public static Currency JPY(Code)
	The Japanese Yen currency.

KRW
final public static Currency KRW(Code)
	The Korean Republic Won currency.

TWD
final public static Currency TWD(Code)
	The Taiwanese dollar currency.

USD
final public static Currency USD(Code)
	The United State dollar currency.

Constructor Detail

Currency
public Currency(String code)(Code)
	Creates the currency unit for the given currency code. See the ISO 4217 maintenance agency for more information, including a table of currency codes. Parameters: code - the ISO-4217 code of the currency (e.g.`"EUR", "USD", "JPY"`). throws: IllegalArgumentException - if the specified code is not an ISO-4217code.

Method Detail

equals
public boolean equals(Object obj)(Code)

getCode
public String getCode()(Code)
	Returns the currency code for this currency. the ISO-4217 code of the currency (e.g. `"EUR", "USD", "JPY"`).

getDefaultFractionDigits
public int getDefaultFractionDigits()(Code)
	Returns the default number of fraction digits used with this currency unit. For example, the default number of fraction digits for the Currency.EUR is 2, while for the Currency.JPY (Yen) it's 0. This method can be overriden for custom currencies returning values different from `2`. the default number of fraction digits for this currency.

getExchangeRate
public double getExchangeRate()(Code)
	Returns the exchange rate for this Currency . the amount stated in the Currency.getReferenceCurrencyequals to one unit of this Currency. throws: ConversionException - if the exchange rate has not be set forthis Currency.

getReferenceCurrency
public static Currency getReferenceCurrency()(Code)
	Returns the currency used as reference when setting the exchange rate. By default, the reference currency is the currency for the default country locale. the reference currency. See Also: Currency.setExchangeRate

getStandardUnit
public Unit<? super Money> getStandardUnit()(Code)

hashCode
public int hashCode()(Code)

setExchangeRate
public void setExchangeRate(double refAmount)(Code)
	Sets the exchange rate of this Currency relatively to the reference currency. Setting the exchange rate allows for conversion between Money stated in different currencies. For example: Currency.setReferenceCurrency(Currency.USD); Currency.EUR.setExchangeRate(1.17); // 1.0 € = 1.17 $ Parameters: refAmount - the amount stated in the Currency.getReferenceCurrencyequals to one unit of this Currency. See Also: Currency.getReferenceCurrency

setReferenceCurrency
public static void setReferenceCurrency(Currency currency)(Code)
	Sets the reference currency (context-local). Changing the reference currency clears all the exchange rates previously set. Parameters: currency - the new reference currency. See Also: javolution.context.LocalContext

toStandardUnit
public UnitConverter toStandardUnit()(Code)

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