Package money

Class SimpleMoney

java.lang.Object

money.Money

money.SimpleMoney

public class SimpleMoney
extends Money

A simple amount of Money with its currency.

Author:

Kent Beck, Robert Duvall (small updates and commenting)

Constructor Summary

Constructors

Constructor	Description
SimpleMoney(int amount, String currency)	Constructs simple money from the given amount and currency.

Method Summary

Modifier and Type	Method	Description
Money	add(Money m)	Adds given money to this money.
int	amount()	Returns only the amount of this money.
String	currency()	Returns only the currency of this money.
boolean	equals(Object anObject)
int	hashCode()
boolean	isZero()	Tests whether this money is zero
Money	multiply(int factor)	Multiplies this money by the given factor.
Money	negate()	Negates this money.
Money	subtract(Money m)	Subtracts given money from this money.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

SimpleMoney

public SimpleMoney(int amount,
 String currency)

Constructs simple money from the given amount and currency.

Method Details

add

public Money add(Money m)

Description copied from class: Money

Adds given money to this money.

Specified by:

add in class Money

See Also:

• Forwards the request to addMoney helper, since we know what concrete type this instance is

subtract

public Money subtract(Money m)

Description copied from class: Money

Subtracts given money from this money.

Specified by:

subtract in class Money

See Also:

• Money.subtract(Money)

multiply

public Money multiply(int factor)

Description copied from class: Money

Multiplies this money by the given factor.

Specified by:

multiply in class Money

See Also:

• Money.multiply(int)

negate

public Money negate()

Description copied from class: Money

Negates this money.

Specified by:

negate in class Money

See Also:

• Money.negate()

isZero

public boolean isZero()

Description copied from class: Money

Tests whether this money is zero

Specified by:

isZero in class Money

See Also:

• Money.isZero()

amount

public int amount()

Returns only the amount of this money.

currency

public String currency()

Returns only the currency of this money.

equals

public boolean equals(Object anObject)

Overrides:

equals in class Object

See Also:

• Object.equals(Object)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

See Also:

• Object.hashCode()

toString

public String toString()

Overrides:

toString in class Object

See Also:

• Object.toString()