horstmann.ch05_invoice

Class Invoice

java.lang.Object

horstmann.ch05_invoice.Invoice

public class Invoice
extends java.lang.Object

An invoice for a sale, consisting of line items.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.ArrayList<LineItem>	items
private java.util.ArrayList<javax.swing.event.ChangeListener>	listeners

Constructor Summary

Constructors

Constructor and Description
Invoice() Constructs a blank invoice.

Method Summary

Modifier and Type	Method and Description
void	addChangeListener(javax.swing.event.ChangeListener listener) Adds a change listener to the invoice.
void	addItem(LineItem item) Adds an item to the invoice.
java.lang.String	format(InvoiceFormatter formatter)
java.util.Iterator<LineItem>	getItems() Gets an iterator that iterates through the items.

Methods inherited from class java.lang.Object

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

Field Detail

items

private java.util.ArrayList<LineItem> items

listeners

private java.util.ArrayList<javax.swing.event.ChangeListener> listeners

Constructor Detail

Invoice

public Invoice()

Constructs a blank invoice.

Method Detail

addItem

public void addItem(LineItem item)

Adds an item to the invoice.

Parameters:

item - the item to add

addChangeListener

public void addChangeListener(javax.swing.event.ChangeListener listener)

Adds a change listener to the invoice.

Parameters:

listener - the change listener to add

getItems

public java.util.Iterator<LineItem> getItems()

Gets an iterator that iterates through the items.

Returns:

an iterator for the items

format

public java.lang.String format(InvoiceFormatter formatter)