Design patterns are general solutions to common problems in software design that have been proven to work well through repeated use. There are three main types of design patterns: creational patterns that deal with object creation mechanisms, structural patterns that concern class and object composition, and behavioral patterns that involve communication between classes or objects. Design patterns improve code readability and speed up the development process by providing tested and proven development paradigms.

1. DESIGN
PATTERN
OVERVIEW

2. AGENDA
1. What
2. Why
3. Types

3. WHAT
1. General solutions to common problems in software design
2. Descriptions or templates for solving problems
3. Tested and proven development paradigms

4. WHY
1. Speed up the development process
2. Improves code readability

5. TYPES
1. Creational
1. Class Instantiation
2. Structural
1. Class/Object composition
3. Behavioral
1. Class's objects communication

6. TYPES
Creational Structural Behavioral
Abstract Adapter Chain of
Null Object
Factory Responsibility
Bridge
Builder Command Observer
Composite
Factory Interpreter State
Method Decorator
Object Pool Iterator Strategy
Facade
Template
Prototype Flyweight Mediator
Method
Private
Singleton Class Data Memento Visitor
Proxy