Java Reference
In-Depth Information
Abstract Factory (Chapter 17)
SOLUTION 17.1
Figure B.21 shows a solution to providing concrete
com.oozinoz.check.canada
classes
that implement the interfaces and abstract class in
com.ooz-inoz.check
. One subtlety is
that you need only one concrete class for offline credit checking, because at Oozinoz, offline
checking is the same for calls from the United States and Canada.
Figure B.21. The
canada
package provides a family of concrete classes that conduct
a variety of checks for Canadian calls.
