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Module 2: Introduction to UML - page 31 / 48

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31

Initialization

Open

entry: Register student

exit: Increment count

Closed

Canceled

do: Initialize course

do: Finalize course

do: Notify registered students

Add Student /

Set count = 0

Add student [count < 10]

[ count = 10 ]

Cancel

Cancel

Cancel

Diagrams in UML State Transition Diagram (Statechart Diagram)

 The life history (often of a given class: from class to object behavior)

 States, transitions, events that cause a transition from one state to another

 Actions that result from a state change

What life history/class is this for?   Anything wrong?

…until the drop date?

initial

final

event/action

(internal)

condition

state

State name

activity

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