3.10. (Optional) Software Engineering Case Study: Identifying the Classes in a Requirements Document

Now we begin designing the ATM system that we introduced in Chapter 2. In this section, we identify the classes that are needed to build the ATM system by analyzing the nouns and noun phrases that appear in the requirements document. We introduce UML class diagrams to model the relationships between these classes. This is an important first step in defining the structure of our system.

Identifying the Classes in a System

We begin our OOD process by identifying the classes required to build the ATM system. We will eventually describe these classes using UML class diagrams and implement these classes in Java. First, we review the requirements ...

Get Java™ How to Program, Seventh Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.