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Unformatted text preview: Each lifeline can have one or more activations bars ( open boxes ) that show when the object is active and the responsibilities of the class. A method call appears as a solid arrow from the calling object’s activation bar to the top of a new activation bar on the lifeline of the called object. Such arrows are labeled with a message expression that describes the task performed. Order of messages sequences top to bottom Messages labeled with message name Optionally arguments and control information Control information may express conditions: such as [hasStock], or iteration Returns (dashed lines) are optional Use them to add clarity...
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This note was uploaded on 12/07/2011 for the course COMP 2710 taught by Professor Staff during the Fall '08 term at Auburn University.
- Fall '08