Class Account

java.lang.Object
  Account

public class Account
extends java.lang.Object

A class for representing bank accounts.

Author:

R. Brown, 1/00

Field Summary

(package private) long	accountNumber Unique identifying number for an instance of Account.
(package private) double	balance Current balance in this instance of Account.
(package private) double	initialBalance Original balance when this instance of Account was constructed.
(package private) static long	nextAccountNumber Lowest unused account number, for generating unique identifying numbers for instances of Account.
(package private) java.lang.String	owner Name of the owner of an instance of Account.

Constructor Summary

Account(java.lang.String name, double init_bal)
Creates an instance of Account, with it's own account number.

Method Summary

double	deposit(double amount) Add an amount to the balance.
long	getAccountNumber() Retrieve the account number.
double	getBalance() Retrieve the current balance.
double	getInitialBalance() Retrieve the original balance.
java.lang.String	getOwner() Retrieve the owner.
java.lang.String	toString() Returns a string representation of this object.
double	withdraw(double amount) Remove an amount from the balance.

Methods inherited from class java.lang.Object

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

Field Detail

nextAccountNumber

static long nextAccountNumber

Lowest unused account number, for generating unique identifying numbers for instances of Account.

balance

double balance

Current balance in this instance of Account.

initialBalance

double initialBalance

Original balance when this instance of Account was constructed.

accountNumber

long accountNumber

Unique identifying number for an instance of Account.

owner

java.lang.String owner

Name of the owner of an instance of Account.

Constructor Detail

Account

public Account(java.lang.String name,
               double init_bal)

Creates an instance of Account, with it's own account number.

Parameters:

name - The name of the owner

init_bal - The initial balance

Method Detail

getBalance

public double getBalance()

Retrieve the current balance.

Returns:

The value of the state variable balance

getInitialBalance

public double getInitialBalance()

Retrieve the original balance.

Returns:

The value of the state variable initialBalance

getAccountNumber

public long getAccountNumber()

Retrieve the account number.

Returns:

The value of the state variable accountNumber

getOwner

public java.lang.String getOwner()

Retrieve the owner.

Returns:

The value of the state variable owner

deposit

public double deposit(double amount)

Add an amount to the balance.

Parameters:

amount - Non-negative amount to add

Returns:

The resulting balance after addition

Throws:

java.lang.IllegalArgumentException - Thrown if amount is negative

withdraw

public double withdraw(double amount)

Remove an amount from the balance.

Parameters:

amount - Non-negative amount to subtract

Returns:

The resulting balance after subtraction

Throws:

java.lang.IllegalArgumentException - Thrown if amount is negative

toString

public java.lang.String toString()

Returns a string representation of this object.

Overrides:

toString in class java.lang.Object

Returns:

A string showing the owner, account number, balance and initial balance for this instance of Account.