public final class FastMoney extends AbstractMoney implements java.lang.Comparable<javax.money.MonetaryAmount>, java.io.Serializable
MonetaryAmount
. This class internally uses a
single long number as numeric representation, which basically is interpreted as minor units.Money
,
which internally uses BigDecimal
. Nevertheless this comes with a price of less precision.
As an example performing the following calculation one million times, results in slightly
different results:
Money money1 = money1.add(Money.of(EURO, 1234567.3444)); money1 = money1.subtract(Money.of(EURO, 232323)); money1 = money1.multiply(3.4); money1 = money1.divide(5.456);Executed one million (1000000) times this results in
EUR 1657407.962529182
, calculated in
3680 ms, or roughly 3ns/loop.
whrereas
FastMoney money1 = money1.add(FastMoney.of(EURO, 1234567.3444)); money1 = money1.subtract(FastMoney.of(EURO, 232323)); money1 = money1.multiply(3.4); money1 = money1.divide(5.456);executed one million (1000000) times results in
EUR 1657407.96251
, calculated in 179 ms,
which is less than 1ns/loop.
Also note than mixing up types my drastically change the performance behavior. E.g. replacing the
code above with the following: *
FastMoney money1 = money1.add(Money.of(EURO, 1234567.3444)); money1 = money1.subtract(FastMoney.of(EURO, 232323)); money1 = money1.multiply(3.4); money1 = money1.divide(5.456);executed one million (1000000) times may execute significantly longer, since monetary amount type conversion is involved. Basically, when mixing amount implementations, the performance of the amount, on which most of the operations are operated, has the most significant impact on the overall performance behavior.
currency, monetaryContext
Modifier and Type | Method and Description |
---|---|
FastMoney |
abs()
Returns a
MonetaryAmount whose value is the absolute value of this
MonetaryAmount , and whose scale is this.scale() . |
FastMoney |
add(javax.money.MonetaryAmount amount)
Returns a
MonetaryAmount whose value is (this +
amount) , and whose scale is max(this.scale(),
amount.scale()) . |
int |
compareTo(javax.money.MonetaryAmount o) |
FastMoney |
divide(double number)
Returns a
MonetaryAmount whose value is (this /
divisor) , and whose preferred scale is (this.scale() -
divisor.scale()) ; if the exact quotient cannot be represented an ArithmeticException
is thrown. |
FastMoney |
divide(long amount)
Returns a
MonetaryAmount whose value is (this /
divisor) , and whose preferred scale is (this.scale() -
divisor.scale()) ; if the exact quotient cannot be represented an ArithmeticException
is thrown. |
FastMoney |
divide(java.lang.Number divisor)
Returns a
MonetaryAmount whose value is (this /
divisor) , and whose preferred scale is (this.scale() -
divisor.scale()) ; if the exact quotient cannot be represented an ArithmeticException
is thrown. |
FastMoney[] |
divideAndRemainder(double amount)
Returns a two-element
MonetaryAmount array containing the result of
divideToIntegralValue followed by the result of remainder on the two
operands. |
FastMoney[] |
divideAndRemainder(long amount)
Returns a two-element
MonetaryAmount array containing the result of
divideToIntegralValue followed by the result of remainder on the two
operands. |
FastMoney[] |
divideAndRemainder(java.lang.Number divisor)
Returns a two-element
MonetaryAmount array containing the result of
divideToIntegralValue followed by the result of remainder on the two
operands. |
FastMoney |
divideToIntegralValue(double divisor)
Returns a
MonetaryAmount whose value is the integer part of the quotient
(this / divisor) rounded down. |
FastMoney |
divideToIntegralValue(long divisor)
Returns a
MonetaryAmount whose value is the integer part of the quotient
(this / divisor) rounded down. |
FastMoney |
divideToIntegralValue(java.lang.Number divisor)
Returns a
MonetaryAmount whose value is the integer part of the quotient
(this / divisor) rounded down. |
boolean |
equals(java.lang.Object obj) |
static FastMoney |
from(javax.money.MonetaryAmount amount) |
javax.money.CurrencyUnit |
getCurrency()
Returns the amount’s currency, modelled as
CurrencyUnit . |
protected javax.money.MonetaryContext |
getDefaultMonetaryContext()
Method to be implemented by superclasses to provide the default
MonetaryContext , when not explicit MonetaryContext is
available. |
javax.money.MonetaryAmountFactory<FastMoney> |
getFactory()
Creates a new
MonetaryAmountFactory , returning the same implementation type Hereby
this given amount is used as a template, so reusing the CurrencyUnit , its numeric
value, the algorithmic implementation as well as the current MonetaryContext . |
javax.money.MonetaryContext |
getMonetaryContext()
Access the
MonetaryContext used by this instance. |
javax.money.NumberValue |
getNumber()
Gets the number representation of the numeric value of this item.
|
int |
getPrecision() |
int |
getScale() |
int |
hashCode() |
boolean |
hasSameNumberAs(java.lang.Number number) |
boolean |
isEqualTo(javax.money.MonetaryAmount amount)
Compares two instances of
MonetaryAmount , hereby ignoring non significant trailing
zeroes and different numeric capabilities. |
boolean |
isGreaterThan(javax.money.MonetaryAmount amount)
Compares two instances of
MonetaryAmount , hereby ignoring non significant trailing
zeroes and different numeric capabilities. |
boolean |
isGreaterThan(java.lang.Number number) |
boolean |
isGreaterThanOrEqualTo(javax.money.MonetaryAmount amount)
Compares two instances of
MonetaryAmount , hereby ignoring non significant trailing
zeroes and different numeric capabilities. |
boolean |
isGreaterThanOrEqualTo(java.lang.Number number) |
boolean |
isLessThan(javax.money.MonetaryAmount amount)
Compares two instances of
MonetaryAmount , hereby ignoring non significant trailing
zeroes and different numeric capabilities. |
boolean |
isLessThan(java.lang.Number number) |
boolean |
isLessThanOrEqualTo(javax.money.MonetaryAmount amount)
Compares two instances of
MonetaryAmount , hereby ignoring non significant trailing
zeroes and different numeric capabilities. |
boolean |
isLessThanOrEqualTo(java.lang.Number number) |
boolean |
isNegative()
Checks if a
MonetaryAmount is negative. |
boolean |
isNegativeOrZero()
Checks if a
MonetaryAmount is negative or zero. |
boolean |
isNotEqualTo(javax.money.MonetaryAmount amount) |
boolean |
isNotEqualTo(java.lang.Number number) |
boolean |
isPositive()
Checks if a
MonetaryAmount is positive. |
boolean |
isPositiveOrZero()
Checks if a
MonetaryAmount is positive or zero. |
boolean |
isZero()
Checks if an
MonetaryAmount is zero. |
FastMoney |
multiply(double amount)
Returns a
MonetaryAmount whose value is (this ×
multiplicand), and whose scale is (this.scale() +
multiplicand.scale()) . |
FastMoney |
multiply(long multiplicand)
Returns a
MonetaryAmount whose value is (this ×
multiplicand), and whose scale is (this.scale() +
multiplicand.scale()) . |
FastMoney |
multiply(java.lang.Number multiplicand)
Returns a
MonetaryAmount whose value is (this ×
multiplicand), and whose scale is (this.scale() +
multiplicand.scale()) . |
FastMoney |
negate()
Returns a
MonetaryAmount whose value is (-this) , and whose scale is
this.scale() . |
static FastMoney |
of(javax.money.CurrencyUnit currency,
java.lang.Number number)
Static factory method for creating a new instance of
FastMoney . |
static FastMoney |
of(javax.money.CurrencyUnit currency,
javax.money.NumberValue numberBinding)
Static factory method for creating a new instance of
FastMoney . |
static FastMoney |
of(java.lang.String currencyCode,
java.lang.Number number)
Static factory method for creating a new instance of
FastMoney . |
FastMoney |
plus()
Returns a
MonetaryAmount whose value is (+this) , with rounding according to
the context settings. |
<R> R |
query(javax.money.MonetaryQuery<R> query)
Queries this monetary amount for a value.
|
FastMoney |
remainder(double amount)
Returns a
MonetaryAmount whose value is (this % divisor) . |
FastMoney |
remainder(long number)
Returns a
MonetaryAmount whose value is (this % divisor) . |
FastMoney |
remainder(java.lang.Number divisor)
Returns a
MonetaryAmount whose value is (this % divisor) . |
FastMoney |
scaleByPowerOfTen(int n)
Returns a
MonetaryAmount whose numerical value is equal to ( this *
10n). |
int |
signum()
Returns the signum function of this
MonetaryAmount . |
FastMoney |
stripTrailingZeros()
Returns a
MonetaryAmount which is numerically equal to this one but with any trailing
zeros removed from the representation. |
FastMoney |
subtract(javax.money.MonetaryAmount subtrahend)
Returns a
MonetaryAmount whose value is (this -
amount) , and whose scale is max(this.scale(),
subtrahend.scale()) . |
java.lang.String |
toString() |
FastMoney |
with(javax.money.MonetaryOperator operator)
Returns an operated object of the same type as this object with the operation made.
|
checkAmountParameter, checkNumberParameter, getBigDecimal, getBigDecimal, getBigDecimal, getBigDecimal, getMathContext
public FastMoney abs()
javax.money.MonetaryAmount
MonetaryAmount
whose value is the absolute value of this
MonetaryAmount
, and whose scale is this.scale()
.abs
in interface javax.money.MonetaryAmount
abs(this)
public FastMoney add(javax.money.MonetaryAmount amount)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this +
amount)
, and whose scale is max(this.scale(),
amount.scale())
.add
in interface javax.money.MonetaryAmount
amount
- value to be added to this MonetaryAmount
.this + amount
public int compareTo(javax.money.MonetaryAmount o)
compareTo
in interface java.lang.Comparable<javax.money.MonetaryAmount>
public FastMoney divide(double number)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this /
divisor)
, and whose preferred scale is (this.scale() -
divisor.scale())
; if the exact quotient cannot be represented an ArithmeticException
is thrown.divide
in interface javax.money.MonetaryAmount
number
- value by which this MonetaryAmount
is to be divided.this / divisor
public FastMoney divide(long amount)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this /
divisor)
, and whose preferred scale is (this.scale() -
divisor.scale())
; if the exact quotient cannot be represented an ArithmeticException
is thrown.divide
in interface javax.money.MonetaryAmount
amount
- value by which this MonetaryAmount
is to be divided.this / divisor
public FastMoney divide(java.lang.Number divisor)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this /
divisor)
, and whose preferred scale is (this.scale() -
divisor.scale())
; if the exact quotient cannot be represented an ArithmeticException
is thrown.divide
in interface javax.money.MonetaryAmount
divisor
- value by which this MonetaryAmount
is to be divided.this / divisor
public FastMoney[] divideAndRemainder(double amount)
javax.money.MonetaryAmount
MonetaryAmount
array containing the result of
divideToIntegralValue
followed by the result of remainder
on the two
operands.
Note that if both the integer quotient and remainder are needed, this method is faster than
using the divideToIntegralValue
and remainder
methods separately because the
division need only be carried out once.
divideAndRemainder
in interface javax.money.MonetaryAmount
amount
- value by which this MonetaryAmount
is to be divided, and the remainder
computed.MonetaryAmount
array: the quotient (the result of
divideToIntegralValue
) is the initial element and the remainder is the final
element.MonetaryAmount.divideToIntegralValue(double)
,
MonetaryAmount.remainder(double)
public FastMoney[] divideAndRemainder(long amount)
javax.money.MonetaryAmount
MonetaryAmount
array containing the result of
divideToIntegralValue
followed by the result of remainder
on the two
operands.
Note that if both the integer quotient and remainder are needed, this method is faster than
using the divideToIntegralValue
and remainder
methods separately because the
division need only be carried out once.
divideAndRemainder
in interface javax.money.MonetaryAmount
amount
- value by which this MonetaryAmount
is to be divided, and the remainder
computed.MonetaryAmount
array: the quotient (the result of
divideToIntegralValue
) is the initial element and the remainder is the final
element.MonetaryAmount.divideToIntegralValue(long)
,
MonetaryAmount.remainder(long)
public FastMoney[] divideAndRemainder(java.lang.Number divisor)
javax.money.MonetaryAmount
MonetaryAmount
array containing the result of
divideToIntegralValue
followed by the result of remainder
on the two
operands.
Note that if both the integer quotient and remainder are needed, this method is faster than
using the divideToIntegralValue
and remainder
methods separately because the
division need only be carried out once.
divideAndRemainder
in interface javax.money.MonetaryAmount
divisor
- value by which this MonetaryAmount
is to be divided, and the remainder
computed.MonetaryAmount
array: the quotient (the result of
divideToIntegralValue
) is the initial element and the remainder is the final
element.MonetaryAmount.divideToIntegralValue(Number)
,
MonetaryAmount.remainder(Number)
public FastMoney divideToIntegralValue(double divisor)
javax.money.MonetaryAmount
MonetaryAmount
whose value is the integer part of the quotient
(this / divisor)
rounded down. The preferred scale of the result is
(this.scale() -
divisor.scale())
.divideToIntegralValue
in interface javax.money.MonetaryAmount
divisor
- value by which this BigDecimal
is to be divided.this / divisor
.BigDecimal.divideToIntegralValue(java.math.BigDecimal)
public FastMoney divideToIntegralValue(long divisor)
javax.money.MonetaryAmount
MonetaryAmount
whose value is the integer part of the quotient
(this / divisor)
rounded down. The preferred scale of the result is
(this.scale() -
divisor.scale())
.divideToIntegralValue
in interface javax.money.MonetaryAmount
divisor
- value by which this BigDecimal
is to be divided.this / divisor
.BigDecimal.divideToIntegralValue(java.math.BigDecimal)
public FastMoney divideToIntegralValue(java.lang.Number divisor)
javax.money.MonetaryAmount
MonetaryAmount
whose value is the integer part of the quotient
(this / divisor)
rounded down. The preferred scale of the result is
(this.scale() -
divisor.scale())
.divideToIntegralValue
in interface javax.money.MonetaryAmount
divisor
- value by which this BigDecimal
is to be divided.this / divisor
.BigDecimal.divideToIntegralValue(java.math.BigDecimal)
public boolean equals(java.lang.Object obj)
equals
in class java.lang.Object
public static FastMoney from(javax.money.MonetaryAmount amount)
public javax.money.CurrencyUnit getCurrency()
AbstractMoney
CurrencyUnit
.
Implementations may co-variantly change the return type to a more
specific implementation of CurrencyUnit
if desired.getCurrency
in interface javax.money.CurrencySupplier
getCurrency
in interface javax.money.MonetaryAmount
getCurrency
in class AbstractMoney
null
MonetaryAmount.getCurrency()
protected javax.money.MonetaryContext getDefaultMonetaryContext()
AbstractMoney
MonetaryContext
, when not explicit MonetaryContext
is
available.getDefaultMonetaryContext
in class AbstractMoney
MonetaryContext
, never null
.public javax.money.MonetaryAmountFactory<FastMoney> getFactory()
javax.money.MonetaryAmount
MonetaryAmountFactory
, returning the same implementation type Hereby
this given amount is used as a template, so reusing the CurrencyUnit
, its numeric
value, the algorithmic implementation as well as the current MonetaryContext
.
This method is used for creating a new amount result after having done calculations that are not directly mappable to the default monetary arithmetics, e.g. currency conversion.
getFactory
in interface javax.money.MonetaryAmount
MonetaryAmountFactory
with the given MonetaryAmount
as its
default values.public javax.money.MonetaryContext getMonetaryContext()
AbstractMoney
MonetaryContext
used by this instance.getMonetaryContext
in interface javax.money.MonetaryAmount
getMonetaryContext
in class AbstractMoney
MonetaryContext
used, never null.MonetaryAmount.getMonetaryContext()
public javax.money.NumberValue getNumber()
getNumber
in interface javax.money.MonetaryAmount
getNumber
in interface javax.money.NumberSupplier
Number
represention matching best.public int getPrecision()
public int getScale()
public int hashCode()
hashCode
in class java.lang.Object
public boolean hasSameNumberAs(java.lang.Number number)
public boolean isEqualTo(javax.money.MonetaryAmount amount)
javax.money.MonetaryAmount
MonetaryAmount
, hereby ignoring non significant trailing
zeroes and different numeric capabilities.isEqualTo
in interface javax.money.MonetaryAmount
amount
- the MonetaryAmount
to be compared with this instance.true
if amount == this
.public boolean isGreaterThan(javax.money.MonetaryAmount amount)
javax.money.MonetaryAmount
MonetaryAmount
, hereby ignoring non significant trailing
zeroes and different numeric capabilities.isGreaterThan
in interface javax.money.MonetaryAmount
amount
- the MonetaryAmount
to be compared with this instance.true
if amount > this
.public boolean isGreaterThan(java.lang.Number number)
public boolean isGreaterThanOrEqualTo(javax.money.MonetaryAmount amount)
javax.money.MonetaryAmount
MonetaryAmount
, hereby ignoring non significant trailing
zeroes and different numeric capabilities.isGreaterThanOrEqualTo
in interface javax.money.MonetaryAmount
amount
- the MonetaryAmount
to be compared with this instance.true
if amount >= this
.public boolean isGreaterThanOrEqualTo(java.lang.Number number)
public boolean isLessThan(javax.money.MonetaryAmount amount)
javax.money.MonetaryAmount
MonetaryAmount
, hereby ignoring non significant trailing
zeroes and different numeric capabilities.isLessThan
in interface javax.money.MonetaryAmount
amount
- the MonetaryAmount
to be compared with this instance.true
if amount < this
.public boolean isLessThan(java.lang.Number number)
public boolean isLessThanOrEqualTo(javax.money.MonetaryAmount amount)
javax.money.MonetaryAmount
MonetaryAmount
, hereby ignoring non significant trailing
zeroes and different numeric capabilities.isLessThanOrEqualTo
in interface javax.money.MonetaryAmount
amount
- the MonetaryAmount
to be compared with this instance.true
if amount <= this
.public boolean isLessThanOrEqualTo(java.lang.Number number)
public boolean isNegative()
javax.money.MonetaryAmount
MonetaryAmount
is negative.isNegative
in interface javax.money.MonetaryAmount
true
if MonetaryAmount.signum()
< 0.public boolean isNegativeOrZero()
javax.money.MonetaryAmount
MonetaryAmount
is negative or zero.isNegativeOrZero
in interface javax.money.MonetaryAmount
true
if MonetaryAmount.signum()
<= 0.public boolean isNotEqualTo(javax.money.MonetaryAmount amount)
public boolean isNotEqualTo(java.lang.Number number)
public boolean isPositive()
javax.money.MonetaryAmount
MonetaryAmount
is positive.isPositive
in interface javax.money.MonetaryAmount
true
if MonetaryAmount.signum()
> 0.public boolean isPositiveOrZero()
javax.money.MonetaryAmount
MonetaryAmount
is positive or zero.isPositiveOrZero
in interface javax.money.MonetaryAmount
true
if MonetaryAmount.signum()
>= 0.public boolean isZero()
javax.money.MonetaryAmount
MonetaryAmount
is zero.isZero
in interface javax.money.MonetaryAmount
true
if MonetaryAmount.signum()
== 0.public FastMoney multiply(double amount)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this ×
multiplicand), and whose scale is (this.scale() +
multiplicand.scale())
.multiply
in interface javax.money.MonetaryAmount
amount
- value to be multiplied by this MonetaryAmount
.this * multiplicand
public FastMoney multiply(long multiplicand)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this ×
multiplicand), and whose scale is (this.scale() +
multiplicand.scale())
.multiply
in interface javax.money.MonetaryAmount
multiplicand
- value to be multiplied by this MonetaryAmount
.this * multiplicand
public FastMoney multiply(java.lang.Number multiplicand)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this ×
multiplicand), and whose scale is (this.scale() +
multiplicand.scale())
.multiply
in interface javax.money.MonetaryAmount
multiplicand
- value to be multiplied by this MonetaryAmount
.this * multiplicand
public FastMoney negate()
javax.money.MonetaryAmount
MonetaryAmount
whose value is (-this)
, and whose scale is
this.scale()
.negate
in interface javax.money.MonetaryAmount
-this
.public static FastMoney of(javax.money.CurrencyUnit currency, java.lang.Number number)
FastMoney
.currency
- The target currency, not null.number
- The numeric part, not null.FastMoney
.public static FastMoney of(javax.money.CurrencyUnit currency, javax.money.NumberValue numberBinding)
FastMoney
.currency
- The target currency, not null.numberBinding
- The numeric part, not null.FastMoney
.public static FastMoney of(java.lang.String currencyCode, java.lang.Number number)
FastMoney
.currencyCode
- The target currency as currency code.number
- The numeric part, not null.FastMoney
.public FastMoney plus()
javax.money.MonetaryAmount
MonetaryAmount
whose value is (+this)
, with rounding according to
the context settings.plus
in interface javax.money.MonetaryAmount
this
, rounded as necessary. A zero result will have a scale of 0.BigDecimal.plus()
public <R> R query(javax.money.MonetaryQuery<R> query)
javax.money.MonetaryAmount
This queries this amount using the specified query strategy object.
Implementations must ensure that no observable state is altered when this read-only method is invoked.
query
in interface javax.money.MonetaryAmount
R
- the type of the resultquery
- the query to invoke, not nullpublic FastMoney remainder(double amount)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this % divisor)
.
The remainder is given by
this.subtract(this.divideToIntegralValue(divisor).multiply(divisor))
. Note that this
is not the modulo operation (the result can be negative).
remainder
in interface javax.money.MonetaryAmount
amount
- value by which this MonetaryAmount
is to be divided.this % divisor
.public FastMoney remainder(long number)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this % divisor)
.
The remainder is given by
this.subtract(this.divideToIntegralValue(divisor).multiply(divisor))
. Note that this
is not the modulo operation (the result can be negative).
remainder
in interface javax.money.MonetaryAmount
number
- value by which this MonetaryAmount
is to be divided.this % divisor
.public FastMoney remainder(java.lang.Number divisor)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this % divisor)
.
The remainder is given by
this.subtract(this.divideToIntegralValue(divisor).multiply(divisor))
. Note that this
is not the modulo operation (the result can be negative).
remainder
in interface javax.money.MonetaryAmount
divisor
- value by which this MonetaryAmount
is to be divided.this % divisor
.public FastMoney scaleByPowerOfTen(int n)
javax.money.MonetaryAmount
MonetaryAmount
whose numerical value is equal to ( this
*
10n). The scale of the result is (this.scale() - n)
.scaleByPowerOfTen
in interface javax.money.MonetaryAmount
n
- the power.public int signum()
javax.money.MonetaryAmount
MonetaryAmount
.signum
in interface javax.money.MonetaryAmount
MonetaryAmount
is negative, zero, or
positive.public FastMoney stripTrailingZeros()
javax.money.MonetaryAmount
MonetaryAmount
which is numerically equal to this one but with any trailing
zeros removed from the representation. For example, stripping the trailing zeros from the
MonetaryAmount
value CHF 600.0
, which has [BigInteger
, scale
]
components equals to [6000, 1], yields 6E2
with [ BigInteger
, scale
]
components equals to [6, -2]stripTrailingZeros
in interface javax.money.MonetaryAmount
MonetaryAmount
with any trailing zeros removed.public FastMoney subtract(javax.money.MonetaryAmount subtrahend)
javax.money.MonetaryAmount
MonetaryAmount
whose value is (this -
amount)
, and whose scale is max(this.scale(),
subtrahend.scale())
.subtract
in interface javax.money.MonetaryAmount
subtrahend
- value to be subtracted from this MonetaryAmount
.this - amount
public java.lang.String toString()
toString
in class java.lang.Object
public FastMoney with(javax.money.MonetaryOperator operator)
javax.money.MonetaryAmount
MonetaryAmountFactory
instances: // converting from Money to MyMoney Money m = ...; MonetartyAmountFactoryf = MonetaryAmounts.getAmountFactory(MyMoney.class); MyMoney myMoney = f.setAmount(m).create();
This converts this monetary amount according to the rules of the specified operator. A typical operator will change the amount and leave the currency unchanged. A more complex operator might also change the currency.
Some example code indicating how and why this method is used:
Hereby also the method signature on the implementation type must return the concrete type, to enable a fluent API, e.g.MonetaryAmount money = money.with(amountMultipliedBy(2)); money = money.with(amountRoundedToNearestWholeUnit());
public final class MyMoney implements MonetaryAmount{ ... public MyMoney with(MonetaryOperator operator){ ... } ... }
with
in interface javax.money.MonetaryAmount
operator
- the operator to use, not null