Design Patterns (GoF) for Java Training in Thimphu, Bhutan

This training program introduces the Gang of Four (GoF) design patterns and their application in Java. Participants will learn to identify recurring design problems, apply the correct patterns, and implement them in Java code. The course blends theory, examples, and hands-on coding exercises to strengthen object-oriented design and improve maintainability, scalability, and reusability of software.

Foundations and Creational Patterns

Module 1: Introduction to Design Patterns

• History and importance of GoF patterns
• Principles of good software design (SOLID principles)
• Categories of design patterns: Creational, Structural, Behavioral
• When to use (and when not to use) design patterns

Module 2: Creational Patterns Overview

• Intent and benefits of Creational patterns
• Factory Method
• Abstract Factory
• Builder
• Prototype
• Singleton

Module 3: Hands-on with Creational Patterns

• Coding exercises in Java for each Creational pattern
• Refactoring code examples using Factory and Builder patterns

Structural Patterns

Module 4: Structural Patterns Overview

• Intent and benefits of Structural patterns
• Adapter
• Bridge
• Composite
• Decorator
• Facade
• Flyweight
• Proxy

Module 5: Hands-on with Structural Patterns

• Coding exercises in Java for each Structural pattern
• Refactoring examples: using Adapter and Decorator in real-world problems

Module 6: Integration with Creational Patterns

• Combining Creational and Structural patterns
• Example: Abstract Factory + Bridge in UI design
• Group exercise

Behavioral Patterns and Wrap-up

Module 7: Behavioral Patterns Overview

• Intent and benefits of Behavioral patterns
• Chain of Responsibility
• Command
• Interpreter
• Iterator
• Mediator
• Memento
• Observer
• State
• Strategy
• Template Method
• Visitor

Module 8: Hands-on with Behavioral Patterns

• Coding exercises in Java for key patterns (Strategy, Observer, Command)
• Refactoring examples with State and Template Method

Module 9: Applying Patterns in Real Projects

• Recognizing design smells and applying patterns to fix them
• Pattern synergy: combining multiple patterns in a solution
• Anti-patterns and misuse of design patterns

Module 10: Course Wrap-up

• Summary of Creational, Structural, Behavioral patterns
• Best practices in applying patterns in Java projects
• Recommended resources for mastering design patterns
• Q&A and final assessment discussion