transition with same start/end in UML state diagram

Question

I am new to UML, regrading FSM diagram, how to represent two transitions that lead to same state, for example, I'm in state1:

when(event1)-->action1-->state2
when(event2)-->action2-->state2

I mean do I need to draw two lines from state1 to state2?

Answer 1

Yes, you have to draw two lines since the event and action is part of the line.

as you can see in http://en.wikipedia.org/wiki/File:UML_state_machine_Fig1.png

your line will get a text like "event1 / action1" and "event2 / action2".

If you don't generate code from your diagram, you can also use one line and add a text like "event1 / action1 OR event2 / action2" if this is more readable.

I consider UML as a guide - sometimes you have to change the rules a little bit in order to create something readable and useful. :-)