Chapter 13. The Builder Pattern

In this chapter we'll consider how to use the Builder pattern to construct objects from components. We have already seen that the Factory pattern returns one of several different subclasses, depending on the data passed in arguments to the creation methods. But suppose we don't want just a computing algorithm but a whole different user interface because of the data we need to display. A typical example might be your e-mail address book. You probably have both individual people and groups of people in your address book, and you would expect the display for the address book to change so that the People screen has places for first and last name, company, e-mail address, and phone number.

On the other hand, if you were ...

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