Activity diagram example

Activity diagram detailing the internal action states an object undergoes in its lifetime

Callout 1 The initial state is the state of an object before any events in the diagram have acted upon it.

Callout 2 An action state is a type of state that represents a completed activity.

Callout 3 A transition from an action state occurs when the action state's internal action is complete.

Callout 4 To indicate concurrent activities that must be completed before the next activity can occur, use a join transition.

Callout 5 Double-click transitions from action states to label them with guard conditions and action expressions.

Callout 6 To indicate activities that can occur in parallel, use a fork transition.

callout 7 The final state represents the completion of activity in the situation the diagram represents.

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