July 2001
Beginner to intermediate
368 pages
6h 52m
English
book
Design Patterns Explained: A New Perspective on Object-Oriented Design
by Alan Shalloway, James R. Trott
Content preview from Design Patterns Explained: A New Perspective on Object-Oriented Design
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Learning the Abstract Factory Pattern: Implementing It
Example 10-3 shows how to implement the Abstract Factory objects for this design.
Example 10-3. Java Code Fragments: Implementation of ResFactory
abstract class ResFactory {
abstract public DisplayDriver getDispDrvr();
abstract public PrintDriver getPrtDrvr();
}
class LowResFact extends ResFactory {
public DisplayDriver getDispDrvr() {
return new LRDD();
}
public PrintDriver getPrtDrvr() {
return new LRPD();
}
}
class HighResFact extends ResFactory {
public DisplayDriver getDispDrvr() {
return new HRDD();
}
public PrintDriver getPrtDrvr() {
return new HRPD();
}
}
|
To finish the solution, I have the ApControl talk with the appropriate factory object (either LowResFact or HighResFact); this ...