Howto UML: sub methods / calls / operations / procedures

Posted by hsmit on Stack Overflow See other posts from Stack Overflow or by hsmit
Published on 2010-03-17T09:06:18Z Indexed on 2010/03/17 9:11 UTC
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How would you guys model this in UML (in a sequence diagram)?

..
car1.drive();
..

... in Car class:

..
drive(){
    this.startEngine();
}
startEngine(){
    this.getKey();
    this.insertKey();
}
..

a small begin:

objx     car1
----     ----
|         |
| drive() |
|-------->| startEngine()
|         |------------.
|         |            |
|         |<-----------.
|         |

But where comes the getKey() method? Must this be communicated via another sequence diagram? Or is there a way to include sub procedures?

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