Class CreditCard

java.lang.Object

CreditCard

Direct Known Subclasses:

RewardCard

public class CreditCard
extends java.lang.Object

This class encapsulates a credit card and maintains information about it. It is based on the type.lib.CreditCard class written by H. Roumani. This class aggregates the expiry date via a composition.

Field Summary

Fields

Modifier and Type	Field and Description
static double	DEFAULT_LIMIT The default limit for new credit cards.

Constructor Summary

Constructors

Constructor and Description
CreditCard(int cardNum, java.lang.String cardName, java.util.Date expiry) Initializes this object with the passed number, name, and expiry date, and the default limit.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	charge(double amount) Charges the passed amount to the card.
double	getBalance() Returns the card's balance.
java.util.Date	getExpiry() Returns the expiry date of this card.
double	getLimit() Returns the card's limit.
java.lang.String	getName() Returns the name on this card.
int	getNumber() Returns the card's number.
boolean	pay(double payment) Decreases the balance on the card by the amount passed.
boolean	setLimit(double newLimit) Sets the new limit for this credit card.
java.lang.String	toString() Returns the toString representation of this object.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT_LIMIT

public static final double DEFAULT_LIMIT

The default limit for new credit cards.

See Also:

Constant Field Values

Constructor Detail

CreditCard

public CreditCard(int cardNum,
          java.lang.String cardName,
          java.util.Date expiry)

Initializes this object with the passed number, name, and expiry date, and the default limit.

Parameters:

cardNum - The number of the credit card.

cardName - The name on the credit card.

date - The expiry date of the credit card.

Method Detail

charge

public boolean charge(double amount)

Charges the passed amount to the card. The amount is added if the new balance is less than or equal to the card's current limit.

Parameters:

amount - The amount to charge on this card.

Returns:

true if the charge is added, false otherwise.

pay

public boolean pay(double payment)

Decreases the balance on the card by the amount passed.

Parameters:

payment - The payment made on the card.

Returns:

true.

setLimit

public boolean setLimit(double newLimit)

Sets the new limit for this credit card. The new limit is set if the new limit is greater than or equal to the card's current balance.

Parameters:

newLimit - The new limit for this card.

Returns:

true if the new limit is set, false otherwise.

getLimit

public double getLimit()

Returns the card's limit.

Returns:

the current limit associated with this card.

getBalance

public double getBalance()

Returns the card's balance.

Returns:

the current balance associated with this card.

getNumber

public int getNumber()

Returns the card's number.

Returns:

the number associated with this card.

getName

public java.lang.String getName()

Returns the name on this card.

Returns:

the name associated with this card.

getExpiry

public java.util.Date getExpiry()

Returns the expiry date of this card.

Returns:

the expiry date of this card.

toString

public java.lang.String toString()

Returns the toString representation of this object. The dollar values are rounded to two decimal places.

Overrides:

toString in class java.lang.Object

Returns:

the name associated with this card, followed by the card's balance, followed by the card's limit:
Alexia Smith; bal: $0.00; lim: $5000.00.