Although many different OOAD processes exist, a single graphical language for communicating the results of any OOAD process has come into wide use. This language, known as the Unified Modeling Language (UML), is now the most widely used graphical scheme for modeling object-oriented systems. We present our first UML diagrams in Chapters 3 and 4, then use them in our deeper treatment of object-oriented programming through Chapter 12. In our optional ATM Software Engineering Case Study in Chapters 22–23 we present a simple subset of the UML’s features as we guide you through an object-oriented design experience.
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