The document discusses the Builder pattern, which separates the construction of a complex object from its representation. It allows the same construction process to create different representations. The pattern includes a director class that manages the builder, and interfaces for the builder and product classes. The builder pattern allows varying a product's internal representation and encapsulates construction code, but requires a separate concrete builder for each product type. An example implementation is provided.

1. Royal University of Phnom Penh
Faculty of Engineering
Builder Pattern
DR: Srun Sovila
OOAD
Member :
Chea Panha
Mao Chenda
Long Lika
Peng Sony
15-12-2016

2. Outline
I. What is Builder Pattern ?
II. Structure
III. Pros And Cons
IV. Implementation

3.  Builder Pattern
 An Object creation software design pattern.
 A pattern designed to help you configure complex objects.
 Separate the construction of a complex object from its
representation.
 The same construction process can create different
representation

4.  Structure
Director
Builder.BuildPart ()
<<interface>>
Product
Construct ()
<<interface>>
Builder
Buildpart ()
Concrete BuilderBConcrete BuilderA
BuildPart ()
GetProduct ()
BuildPart ()
GetProduct ()
Concrete
ProductA
Concrete
ProductB

5.  Pros and Cons
Pros
• Allows you to vary a product’s internal representation
• Encapsulates code for construction and representation
• Provides control over steps of construction process
Cons
• Requires creating a separate ConcreteBuilder for each different
type of product.

6.  Implementation

7. Thank
You
Q&A