java.lang.Object
- com.opengamma.strata.basics.currency.CurrencyAmount

All Implemented Interfaces:

FxConvertible<CurrencyAmount>, Serializable, Comparable<CurrencyAmount>
```
public final class CurrencyAmount
extends Object
implements FxConvertible<CurrencyAmount>, Comparable<CurrencyAmount>, Serializable
```
An amount of a currency.
This class represents a double amount associated with a currency. It is specifically named "CurrencyAmount" and not "Money" to indicate that it simply holds a currency and an amount. By contrast, naming it "Money" would imply it was a suitable choice for accounting purposes, which it is not. This design approach has been chosen primarily for performance reasons. Using a BigDecimal is markedly slower. See the Money class for the alternative that uses BigDecimal.
A double is a 64 bit floating point value suitable for most calculations. Floating point maths is inexact due to the conflict between binary and decimal arithmetic. As such, there is the potential for data loss at the margins. For example, adding the double values 0.1d and 0.2d results in 0.30000000000000004 rather than 0.3. As can be seen, the level of error is small, hence providing this class is used appropriately, the use of double is acceptable. For example, using this class to provide a meaningful result type after calculations have completed would be an appropriate use.
This class is immutable and thread-safe.

See Also:

Serialized Form

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compareTo(CurrencyAmount other)`	Compares this currency amount to another.
`CurrencyAmount`	`convertedTo(Currency resultCurrency, double fxRate)`	Converts this amount to an equivalent amount the specified currency.
`CurrencyAmount`	`convertedTo(Currency resultCurrency, FxRateProvider rateProvider)`	Converts this amount to an equivalent amount in the specified currency.
`boolean`	`equals(Object obj)`	Checks if this currency amount equals another.
`double`	`getAmount()`	Gets the amount of the currency.
`Currency`	`getCurrency()`	Gets the currency.
`int`	`hashCode()`	Returns a suitable hash code for the currency.
`boolean`	`isNegative()`	Checks if the amount is negative.
`boolean`	`isPositive()`	Checks if the amount is positive.
`boolean`	`isZero()`	Checks if the amount is zero.
`CurrencyAmount`	`mapAmount(DoubleUnaryOperator mapper)`	Applies an operation to the amount.
`CurrencyAmount`	`minus(double amountToSubtract)`	Returns a copy of this `CurrencyAmount` with the specified amount subtracted.
`CurrencyAmount`	`minus(CurrencyAmount amountToSubtract)`	Returns a copy of this `CurrencyAmount` with the specified amount subtracted.
`CurrencyAmount`	`multipliedBy(double valueToMultiplyBy)`	Returns a copy of this `CurrencyAmount` with the amount multiplied.
`CurrencyAmount`	`negated()`	Returns a copy of this `CurrencyAmount` with the amount negated.
`CurrencyAmount`	`negative()`	Returns a copy of this `CurrencyAmount` with a negative amount.
`static CurrencyAmount`	`of(Currency currency, double amount)`	Obtains an instance of `CurrencyAmount` for the specified currency and amount.
`static CurrencyAmount`	`of(String currencyCode, double amount)`	Obtains an instance of `CurrencyAmount` for the specified ISO-4217 three letter currency code and amount.
`static CurrencyAmount`	`parse(String amountStr)`	Parses the string to produce a `CurrencyAmount`.
`CurrencyAmount`	`plus(double amountToAdd)`	Returns a copy of this `CurrencyAmount` with the specified amount added.
`CurrencyAmount`	`plus(CurrencyAmount amountToAdd)`	Returns a copy of this `CurrencyAmount` with the specified amount added.
`CurrencyAmount`	`positive()`	Returns a copy of this `CurrencyAmount` with a positive amount.
`BigMoney`	`toBigMoney()`	Converts this monetary amount to the equivalent `BigMoney`.
`Money`	`toMoney()`	Converts this monetary amount to the equivalent `Money`.
`String`	`toString()`	Gets the amount as a string.
`static CurrencyAmount`	`zero(Currency currency)`	Obtains a zero amount instance of `CurrencyAmount` for the specified currency.

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

- Method Detail
  - zero
```
public static CurrencyAmount zero(Currency currency)
```
    Obtains a zero amount instance of CurrencyAmount for the specified currency.
    
    Parameters:
    
    currency - the currency the amount is in
    
    Returns:
    
    the zero amount instance
  - of
```
public static CurrencyAmount of(Currency currency,
                                double amount)
```
    Obtains an instance of CurrencyAmount for the specified currency and amount.
    If the negative form of zero is passed in, it will be converted to positive zero.
    
    Parameters:
    
    currency - the currency the amount is in
    
    amount - the amount of the currency to represent
    
    Returns:
    
    the currency amount
    
    Throws:
    
    IllegalArgumentException - if the amount is NaN
  - of
```
public static CurrencyAmount of(String currencyCode,
                                double amount)
```
    Obtains an instance of CurrencyAmount for the specified ISO-4217 three letter currency code and amount.
    A currency is uniquely identified by ISO-4217 three letter code. This method creates the currency if it is not known.
    If the negative form of zero is passed in, it will be converted to positive zero.
    
    Parameters:
    
    currencyCode - the three letter currency code, ASCII and upper case
    
    amount - the amount of the currency to represent
    
    Returns:
    
    the currency amount
    
    Throws:
    
    IllegalArgumentException - if the currency code is invalid, or if the amount is NaN
  - parse
```
public static CurrencyAmount parse(String amountStr)
```
    Parses the string to produce a CurrencyAmount.
    This parses the toString format of '${currency} ${amount}'.
    
    Parameters:
    
    amountStr - the amount string
    
    Returns:
    
    the currency amount
    
    Throws:
    
    IllegalArgumentException - if the amount cannot be parsed
  - getCurrency
```
public Currency getCurrency()
```
    Gets the currency.
    For example, in the value 'GBP 12.34' the currency is 'GBP'.
    
    Returns:
    
    the currency
  - getAmount
```
public double getAmount()
```
    Gets the amount of the currency.
    For example, in the value 'GBP 12.34' the amount is 12.34.
    
    Returns:
    
    the amount
  - plus
```
public CurrencyAmount plus(CurrencyAmount amountToAdd)
```
    Returns a copy of this CurrencyAmount with the specified amount added.
    This adds the specified amount to this monetary amount, returning a new object. The addition simply uses standard double arithmetic.
    This instance is immutable and unaffected by this method.
    
    Parameters:
    
    amountToAdd - the amount to add, in the same currency
    
    Returns:
    
    an amount based on this with the specified amount added
    
    Throws:
    
    IllegalArgumentException - if the currencies are not equal
  - plus
```
public CurrencyAmount plus(double amountToAdd)
```
    Returns a copy of this CurrencyAmount with the specified amount added.
    This adds the specified amount to this monetary amount, returning a new object. The addition simply uses standard double arithmetic.
    This instance is immutable and unaffected by this method.
    
    Parameters:
    
    amountToAdd - the amount to add
    
    Returns:
    
    an amount based on this with the specified amount added
  - minus
```
public CurrencyAmount minus(CurrencyAmount amountToSubtract)
```
    Returns a copy of this CurrencyAmount with the specified amount subtracted.
    This subtracts the specified amount to this monetary amount, returning a new object. The addition simply uses standard double arithmetic.
    This instance is immutable and unaffected by this method.
    
    Parameters:
    
    amountToSubtract - the amount to subtract, in the same currency
    
    Returns:
    
    an amount based on this with the specified amount subtracted
    
    Throws:
    
    IllegalArgumentException - if the currencies are not equal
  - minus
```
public CurrencyAmount minus(double amountToSubtract)
```
    Returns a copy of this CurrencyAmount with the specified amount subtracted.
    This subtracts the specified amount to this monetary amount, returning a new object. The addition simply uses standard double arithmetic.
    This instance is immutable and unaffected by this method.
    
    Parameters:
    
    amountToSubtract - the amount to subtract
    
    Returns:
    
    an amount based on this with the specified amount subtracted
  - multipliedBy
```
public CurrencyAmount multipliedBy(double valueToMultiplyBy)
```
    Returns a copy of this CurrencyAmount with the amount multiplied.
    This takes this amount and multiplies it by the specified value. The multiplication simply uses standard double arithmetic.
    This instance is immutable and unaffected by this method.
    
    Parameters:
    
    valueToMultiplyBy - the scalar amount to multiply by
    
    Returns:
    
    an amount based on this with the amount multiplied
  - mapAmount
```
public CurrencyAmount mapAmount(DoubleUnaryOperator mapper)
```
    Applies an operation to the amount.
    This is generally used to apply a mathematical operation to the amount. For example, the operator could multiply the amount by a constant, or take the inverse.
    multiplied = base.mapAmount(value -> (value < 0 ? 0 : value * 3));
    Parameters:
    
    mapper - the operator to be applied to the amount
    
    Returns:
    
    a copy of this amount with the mapping applied to the original amount
  - isZero
```
public boolean isZero()
```
    Checks if the amount is zero.
    
    Returns:
    
    true if zero
  - isPositive
```
public boolean isPositive()
```
    Checks if the amount is positive.
    Zero and negative amounts return false.
    
    Returns:
    
    true if positive
  - isNegative
```
public boolean isNegative()
```
    Checks if the amount is negative.
    Zero and positive amounts return false.
    
    Returns:
    
    true if negative
  - negated
```
public CurrencyAmount negated()
```
    Returns a copy of this CurrencyAmount with the amount negated.
    This takes this amount and negates it. If the amount is 0.0 or -0.0 the negated amount is 0.0.
    This instance is immutable and unaffected by this method.
    
    Returns:
    
    an amount based on this with the amount negated
  - positive
```
public CurrencyAmount positive()
```
    Returns a copy of this CurrencyAmount with a positive amount.
    The result of this method will always be positive, where the amount is equal to Math.abs(amount).
    This instance is immutable and unaffected by this method.
    
    Returns:
    
    a currency amount based on this where the amount is positive
  - negative
```
public CurrencyAmount negative()
```
    Returns a copy of this CurrencyAmount with a negative amount.
    The result of this method will always be negative, equal to -Math.abs(amount).
    This instance is immutable and unaffected by this method.
    
    Returns:
    
    a currency amount based on this where the amount is negative
  - toMoney
```
public Money toMoney()
```
    Converts this monetary amount to the equivalent Money.
    An instance of Money only stores the amount to the number of decimal places of the currency. As such, this method may result in a loss of precision.
    
    Returns:
    
    the equivalent Money
  - toBigMoney
```
public BigMoney toBigMoney()
```
    Converts this monetary amount to the equivalent BigMoney.
    
    Returns:
    
    the equivalent BigMoney
  - convertedTo
```
public CurrencyAmount convertedTo(Currency resultCurrency,
                                  double fxRate)
```
    Converts this amount to an equivalent amount the specified currency.
    The result will be expressed in terms of the given currency, converting using the specified FX rate.
    For example, if this represents 'GBP 100' and this method is called with arguments (USD, 1.6) then the result will be 'USD 160'.
    
    Parameters:
    
    resultCurrency - the currency of the result
    
    fxRate - the FX rate from this currency to the result currency
    
    Returns:
    
    the converted instance, which should be expressed in the specified currency
    
    Throws:
    
    IllegalArgumentException - if the FX is not 1 when no conversion is required
  - convertedTo
```
public CurrencyAmount convertedTo(Currency resultCurrency,
                                  FxRateProvider rateProvider)
```
    Converts this amount to an equivalent amount in the specified currency.
    The result will be expressed in terms of the given currency. If conversion is needed, the provider will be used to supply the FX rate.
    
    Specified by:
    
    convertedTo in interface FxConvertible<CurrencyAmount>
    
    Parameters:
    
    resultCurrency - the currency of the result
    
    rateProvider - the provider of FX rates
    
    Returns:
    
    the converted instance, in the specified currency
    
    Throws:
    
    RuntimeException - if no FX rate could be found
  - compareTo
```
public int compareTo(CurrencyAmount other)
```
    Compares this currency amount to another.
    This compares currencies alphabetically, then by amount.
    
    Specified by:
    
    compareTo in interface Comparable<CurrencyAmount>
    
    Parameters:
    
    other - the other amount
    
    Returns:
    
    negative if less, zero if equal, positive if greater
  - equals
```
public boolean equals(Object obj)
```
    Checks if this currency amount equals another.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    obj - the other amount, null returns false
    
    Returns:
    
    true if equal
  - hashCode
```
public int hashCode()
```
    Returns a suitable hash code for the currency.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    the hash code
  - toString
```
public String toString()
```
    Gets the amount as a string.
    The format is the currency code, followed by a space, followed by the amount: '${currency} ${amount}'.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    the currency amount

Class CurrencyAmount

Method Summary

Methods inherited from class java.lang.Object

Method Detail

zero

of

of

parse

getCurrency

getAmount

plus

plus

minus

minus

multipliedBy

mapAmount

isZero

isPositive

isNegative

negated

positive

negative

toMoney

toBigMoney

convertedTo

convertedTo

compareTo

equals

hashCode

toString