currency
Class CurrencyCalc

java.lang.Object
  currency.CurrencyCalc

public class CurrencyCalc

extends java.lang.Object

This class calculates currency conversion. The application program can specify the initial currency amount, the currency the amount is in and which currency the initial amount should be converted to.

Field Summary

static java.lang.String[]	abbreviations
static java.lang.String[]	currencies
static double[]	rates

Constructor Summary

CurrencyCalc()

Method Summary

java.lang.String	convertFromDollars(java.lang.String amount, java.lang.String currency)
java.lang.String[]	getAbbreviations()
java.lang.String[]	getCurrencies()
java.lang.String	getFromAbbreviation()
java.lang.String	getFromAmount()
java.lang.String	getFromCurrency()
java.lang.String	getToAbbreviation()
java.lang.String	getToAmount()
java.lang.String	getToCurrency()
boolean	isFromAmountValid()
void	setFromAmount(java.lang.String amount) Specifies the initial amount
void	setFromCurrency(java.lang.String currency) Specifies the initial currency
void	setToCurrency(java.lang.String currency) Specifies the resulting currency

Methods inherited from class java.lang.Object

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

Field Detail

currencies

public static final java.lang.String[] currencies

abbreviations

public static final java.lang.String[] abbreviations

rates

public static final double[] rates

Constructor Detail

CurrencyCalc

public CurrencyCalc()

Method Detail

setFromCurrency

public void setFromCurrency(java.lang.String currency)

Specifies the initial currency

Parameters:

currency - the currency name for the initial amount (e.g. "Mexican Peso")

getFromCurrency

public java.lang.String getFromCurrency()

Returns:

the name of the currency for the initial amount

setToCurrency

public void setToCurrency(java.lang.String currency)

Specifies the resulting currency

Parameters:

currency - the currency name for the resulting amount (e.g. "Mexican Peso")

getToCurrency

public java.lang.String getToCurrency()

Returns:

the name of the currency for the resulting amount

getFromAbbreviation

public java.lang.String getFromAbbreviation()
                                     throws java.lang.Exception

Returns:

the abbreviated name of the currency for the initial amount

Throws:

java.lang.Exception

getToAbbreviation

public java.lang.String getToAbbreviation()
                                   throws java.lang.Exception

Returns:

the abbreviated name of the currency for the resulting amount

Throws:

java.lang.Exception

setFromAmount

public void setFromAmount(java.lang.String amount)

Specifies the initial amount

Parameters:

amount - the initial amount to be converted

getFromAmount

public java.lang.String getFromAmount()

Returns:

initial amount to be converted

isFromAmountValid

public boolean isFromAmountValid()

Returns:

true if initial amount is a valid floating point number

getToAmount

public java.lang.String getToAmount()
                             throws java.lang.Exception

Returns:

the resulting amount given the initial amount, currency and the resulting currency

Throws:

java.lang.Exception

getCurrencies

public java.lang.String[] getCurrencies()

Returns:

the list of currencies as an array of strings

getAbbreviations

public java.lang.String[] getAbbreviations()

Returns:

the list of currency abbreviations as an array of strings

convertFromDollars

public java.lang.String convertFromDollars(java.lang.String amount,
                                           java.lang.String currency)
                                    throws java.lang.Exception

Throws:

java.lang.Exception