01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
package horstmann.ch05_invoice;
import java.util.ArrayList;
/**
A bundle of line items that is again a line item.
*/
public class Bundle implements LineItem
{
/**
Constructs a bundle with no items.
*/
public Bundle() { items = new ArrayList<LineItem>(); }
/**
Adds an item to the bundle.
@param item the item to add
*/
public void add(LineItem item) { items.add(item); }
public double getPrice()
{
double price = 0;
for (LineItem item : items)
price += item.getPrice();
return price;
}
public String toString()
{
String description = "Bundle: ";
for (int i = 0; i < items.size(); i++)
{
if (i > 0) description += ", ";
description += items.get(i).toString();
}
return description;
}
private ArrayList<LineItem> items;
}
|
