State Diagrams
Learning outcomes
The material and exercises in this chapter will enable you to:
•. Explain the role and purpose of state diagrams in object-oriented systems development
•. Use a state diagram to identify how a class behaves in response to events
•. Draw a simple state diagram.
Key words that you will find in the glossary:
• action
• event
• state
• transition
• activity
• guard
• superstate
Introduction
So far, we have looked at how to model the organization and structure of data in the system using a class diagram, and at how to model a series of interactions between objects using sequence and collaboration diagrams. In this chapter we examine the system from a different point of view: how a class is affected by the different ...
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