Hands-On Design Patterns with Java

Builder classes

Our solution involves two builder classes—PersonalRoaster and CommercialRoaster. The following code is the first half of the PersonalRoaster class. It implements the Builder interface and instantiates a Roaster object.

In this code section, there are four methods for building specific components, each utilizing the add() method:

public class PersonalRoaster implements Builder {    private Roaster roaster = new Roaster();    @Override    public void buildCoolingTray() {        roaster.add("Personal Roaster Cooling Tray added");    }    @Override    public void buildExhaustSystem() {        roaster.add("Personal Roaster Exhaust System added");    }    @Override    public void buildGasBurner() {        roaster.add("Personal Roaster Gas Burner added");    }    @Override    public void ...