Builder Pattern

Shows the Builder Pattern in combination with vehicles.

Source of Knowledge

https://www.dofactory.com/net/builder-design-pattern

UML

When to use Builder Pattern

• Multiple constructor in your class and might expand
• Avoiding multiple constructor parameter
• Maintaining a given sequence when building an object

Source: https://www.youtube.com/watch?v=CDZniFqC4cI&t=11m50s

Side-Infos

Difference between Factory and Builder Pattern (Metapher)

Factory:

Consider a restaurant. The creation of "today's meal" is a factory pattern, because you tell the kitchen "get me today's meal" and the kitchen (factory) decides what object to generate, based on hidden criteria.

Builder:

The builder appears if you order a custom pizza. In this case, the waiter tells the chef (builder) "I need a pizza; add cheese, onions and bacon to it!" Thus, the builder exposes the attributes the generated object should have, but hides how to set them.

Source: https://stackoverflow.com/questions/757743/what-is-the-difference-between-builder-design-pattern-and-factory-design-pattern