Introduction to Design Patterns

• Understanding the importance of design patterns in software development
• Overview of the different types of design patterns (creational, structural, behavioral)
• Introduction to the Gang of Four (GoF) design patterns

Creational Design Patterns

• Singleton Pattern – Implementing single-instance classes
• Factory Pattern – Creating objects without specifying their concrete classes
• Abstract Factory Pattern – Creating families of related objects
• Builder Pattern – Simplifying complex object construction
• Prototype Pattern – Creating new objects by cloning existing ones

Structural Design Patterns

• Adapter Pattern – Converting the interface of a class into another interface
• Decorator Pattern – Adding new behavior to objects dynamically
• Composite Pattern – Treating individual objects and groups of objects uniformly
• Proxy Pattern – Controlling access to objects by providing a surrogate
• Facade Pattern – Providing a unified interface to a set of interfaces

Behavioral Design Patterns

• Observer Pattern – Defining a one-to-many dependency between objects
• Strategy Pattern – Encapsulating interchangeable algorithms
• Command Pattern – Encapsulating requests as objects
• Template Method Pattern – Defining the skeleton of an algorithm
• Iterator Pattern – Providing a way to access elements of an aggregate object

More Behavioral Design Patterns

• State Pattern – Altering an object’s behavior when its internal state changes
• Chain of Responsibility Pattern – Handling requests through a chain of objects
• Mediator Pattern – Decoupling the interactions between objects
• Visitor Pattern – Defining new operations on objects without changing their structure
• Interpreter Pattern – Evaluating language grammar or expressions

Architectural Design Patterns

• MVC (Model-View-Controller) Pattern – Separating concerns in user interfaces
• MVVM (Model-View-ViewModel) Pattern – Separating concerns in GUI applications
• Repository Pattern – Handling data access and persistence
• Dependency Injection (DI) and Inversion of Control (IoC) Patterns – Managing object dependencies

Testing and Design Patterns

• Using design patterns to improve testability and test design
• Applying design patterns in unit testing and test doubles
• Integration of design patterns with testing frameworks

Anti-patterns and Refactoring

• Identifying common anti-patterns and code smells
• Applying refactoring techniques to improve code quality
• Using design patterns to refactor and improve existing code

Design Patterns in Java Libraries

• Exploring design patterns used in popular Java libraries and frameworks
• Understanding the design choices behind Java standard library classes
• Leveraging design patterns in Java API usage and development

Applying Design Patterns in Real-World Scenarios

• Applying design patterns to solve real-world software design problems
• Case studies and examples of design pattern usage in practical projects
• Identifying and selecting appropriate design patterns for specific scenarios

Best Practices and Guidelines

• Applying best practices for using design patterns effectively
• Choosing the right design pattern for a given problem
• Understanding the trade-offs and considerations when using design patterns