Answer:   1)Build your flow service like this:
Sequence{Main Block}[EXIT ON: SUCCESS]
Sequence{Try Block}[EXIT ON: FAILURE]
Sequence{catch Block}[EXIT ON: DONE]
Sequence{finally Block}[EXIT ON: FAILURE]
2)Sequence{Main Block}[EXIT ON: SUCCESS]
Sequence{Try Block}[EXIT ON: FAILURE]
Sequence{Catch Block}[EXIT ON: DONE]
Sequence{Finally Block}[EXIT ON: DONE]// executes all the statements obviously (catch block in flow service is similar to finally block in java).