Java Reference
In-Depth Information
Figure 29.2. This GUI application presents the composition of machines at the new factory
in Dublin.
There are many possible behaviors for the machine composite that you might desire. For
example, suppose that you need to find a particular machine within the factory model. To add
this ability without modifying the
MachineComponent
hierarchy, you can create
a
FindVisitor
class, such as Figure 29.3 shows.
