Draw a sequence diagram for the warehouseOnFire scenario of Figure 2-15. Include the objects bob, alice, john, FRIEND, and instances of other classes you may need. Draw only the first five message sends.
What will be an ideal response?
This exercise checks the student’s knowledge of sequence diagrams when using instances. This exercise can have
several correct answers. In addition to the UML rules on sequence diagrams, all correct sequence diagrams for this
exercise should include one or more actors on the left of the diagram who initiate the scenario, one or more objects in
the center of the diagram which represent the system, and a dispatcher actor on the right of the diagram who is
notified of the emergency. All actors and objects should be instances. Figure 2-9 depicts a possible answer.
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