You also see the operations shown on thesequence and state diagrams ('systemStop', 'setMode', 'stopBelt','isStarted') as public operations in the class interfaces on theclass diagram. The UML concept ...

In our third installment on UML we'll show you how to use sequence diagrams as a tool in your application development and an understanding of object interaction.

Testing Object-Oriented Systems by Using a Random Sequence of UML Diagrams. OOS (Object-Oriented Systems) facilitate the change in the system in order to improve the functionality of the system.