horstmann.ch05_invoice

Class DiscountedItem

java.lang.Object

horstmann.ch05_invoice.DiscountedItem

All Implemented Interfaces:

LineItem

public class DiscountedItem
extends java.lang.Object
implements LineItem

A decorator for an item that applies a discount.

Field Summary

Fields

Modifier and Type	Field and Description
private double	discount
private LineItem	item

Constructor Summary

Constructors

Constructor and Description
DiscountedItem(LineItem item, double discount) Constructs a discounted item.

Method Summary

Modifier and Type	Method and Description
double	getPrice() Gets the price of this line item.
java.lang.String	toString() Gets the description of this line item.

Methods inherited from class java.lang.Object

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

Field Detail

item

private LineItem item

discount

private double discount

Constructor Detail

DiscountedItem

public DiscountedItem(LineItem item,
                      double discount)

Constructs a discounted item.

Parameters:

item - the item to be discounted

discount - the discount percentage

Method Detail

getPrice

public double getPrice()

Description copied from interface: LineItem

Gets the price of this line item.

Specified by:

getPrice in interface LineItem

Returns:

the price

toString

public java.lang.String toString()

Description copied from interface: LineItem

Gets the description of this line item.

Specified by:

toString in interface LineItem

Overrides:

toString in class java.lang.Object

Returns:

the description