Following books and websites have been consulted for this experiment.
You are suggested to go through them for further details.

Bibliography

Webliography

1. UML 2 State Machine Diagrams
2. Modeling Behavior with UML Interactions and Statecharts
3. UML 2 State Machine Diagramming Guidelines
4. Statechart Diagram
5. PlantUML (Open-Source tool in Java to draw UML Diagram)
6. PlantUML : State Diagram
7. Activity Diagram
8. UML Activity Diagram
9. UML 2 Activity Diagrams
10. Activity Diagrams