March 2002
Intermediate to advanced
496 pages
8h 51m
English
Content preview from Design Patterns Java™ Workbook
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Strategy (Chapter 23)
| SOLUTION 23.1 | The GroupAdvisor and ItemAdvisor classes are instances of ADAPTER, providing the interface a client expects, using the services of a class with a different interface. |
| SOLUTION 23.2 | Figure B.26 shows one solution.
Figure B.26. The advertising policy at Oozinoz includes four strategies that appear as four implementations of the Advisor interface.
|
| SOLUTION 23.3 | The code for ItemAdvisor.java should look something like:
package com.oozinoz.recommend; import com.oozinoz.fireworks.*; public class ItemAdvisor implements Advisor { public static final ItemAdvisor singleton = new ItemAdvisor(); private ItemAdvisor() {} public ... |
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