In this laboratory work I decided to implement MVC pattern for it's development process and for separating the projects logic.

MVC stands for:

Model - contains all the data about the project.

View - displays the data in the Model component.

Controller - the mediator between Model and View.

• Single Responsability Principle.
• Open-Closed Principle.
• Liskov Substitution Principle.
• Interface Segregation Principle.
• Dependacy Inversion Principle.

I tried as much as possible to implement the solid principles into my simulation.I have already unconsciously used two principles the open-closed and liskov substitution.I removed when needed code that was not respecting the first rule thus I created two more classes Economy and Payment that are now handling their own responsabilities.I did not use any interfaces in my simulation so I did not need to worry about the 4th principle.

I have also removed redundant code and now my classes look more lightier and I believe more clear.