Java Reference
In-Depth Information
Figure 21.3. Star presses from Aster Corporation come with an abstract class that you
must subclass to work at Oozinoz.
The Aster star press is smart and independent, and it is also aware that it may be running in a
smart factory with which it must communicate.
For example, the
shutDown()
method informs the factory if the mold it was processing is
left incomplete:
public void shutDown()
{
if (inProcess())
{
stopProcessing();
markMoldIncomplete(currentMoldID);
}
usherInputMolds();
dischargePaste();
flush();
}
The
markMoldIncomplete()
method and the
AsterStarPress
class are abstract. At
Oozinoz, you create a subclass that implements the required method and download this code
to the star press computer. You can implement
markMoldIncomplete()
by passing the
information about the incomplete mold to the
MaterialManager
singleton that tracks
material status.
