B. Unified Modeling Language

The Unified Modeling Language (UML) is a widely used set of notations for diagramming many aspects of software development, from user interactions to relationships between methods. Most of the UML is beyond the scope of this book, but we make extensive use of two types of UML diagrams. A class diagram (Section B.1) summarizes the features of a class, its relation to other classes, or both. An instance diagram (Section B.2) provides a snapshot of a data structure.

This appendix summarizes the UML features used in this book. The same information is introduced gradually in the main text.