Description

Introduction
This training focuses on modern, practical design patterns in Java that help developers build clean, maintainable, and extensible applications. Participants will explore classic GoF patterns along with modern Java best practices, functional design approaches, and patterns used in modern frameworks like Spring Boot and microservices environments.

Prerequisites

• Basic to intermediate Java programming knowledge

• Understanding of OOP concepts

• Familiarity with Java 8+ features (lambdas, streams) is helpful

• Experience with real-world projects is optional but beneficial

Table of Contents

1. Foundations of Modern Java Design
 1.1 What Makes Code Clean and Maintainable
 1.2 Evolution of Design Patterns in Java
 1.3 Object-Oriented vs Functional Approaches
 1.4 Understanding Pattern Categories

2. Essential OOP & SOLID Principles
 2.1 Single Responsibility & Open/Closed Principles
 2.2 Interface Segregation & Dependency Inversion
 2.3 Composition Over Inheritance
 2.4 Identifying Code Smells & Refactoring Opportunities

3. Modern Creational Patterns
 3.1 Singleton Best Practices in Modern Java
 3.2 Factory Method & Abstract Factory
 3.3 Builder Pattern with Java 8+ Enhancements
 3.4 Dependency Injection Fundamentals (Spring Context)
 3.5 Lazy Initialization & Object Pool Patterns

4. Modern Structural Patterns
 4.1 Adapter & Facade Patterns in Modular Java
 4.2 Decorator for Flexible Feature Additions
 4.3 Proxy & AOP Patterns in Spring
 4.4 Composite Pattern with Real Examples
 4.5 Flyweight Pattern for Memory Efficiency

5. Modern Behavioral Patterns
 5.1 Strategy Pattern with Lambdas
 5.2 Observer Pattern with Event-Driven Architecture
 5.3 Command Pattern for Undo/Redo Systems
 5.4 Template Method vs Functional Templates
 5.5 Chain of Responsibility for Processing Pipelines
 5.6 State Pattern in Domain-Driven Scenarios

6. Functional Design Patterns in Java
 6.1 Immutability & Pure Functions
 6.2 Function Composition & Higher-Order Functions
 6.3 Stream-Based Processing Patterns
 6.4 Optional and Null-Safety Patterns

7. Patterns in Modern Java Frameworks
 7.1 Spring Boot Design Pattern Applications
 7.2 Repository & Service Layer Patterns
 7.3 MVC and MVVM in Java Applications
 7.4 Microservices Patterns (Circuit Breaker, API Gateway, CQRS)

8. Practical Pattern Implementation Workshop
 8.1 Hands-On Creational Pattern Exercises
 8.2 Building Structural Pattern-Based Modules
 8.3 Implementing Event-Driven and Reactive Patterns
 8.4 Code Refactoring Using Patterns

9. Advanced Architecture Patterns
 9.1 Domain-Driven Design Building Blocks
 9.2 Hexagonal & Clean Architecture Concepts
 9.3 Modular Monolith vs Microservices Patterns
 9.4 Anti-Patterns and Overengineering Traps

10. Capstone Project: Pattern-Driven Java Application
 10.1 Requirements & Architecture Setup
 10.2 Applying Creational, Structural, and Behavioral Patterns
 10.3 Testing, Debugging & Performance Optimization
 10.4 Final Review & Presentation

This workshop empowers developers to create cleaner, more maintainable, and more extensible Java applications using modern design patterns and architectural best practices. Participants will leave with practical skills and the confidence to apply patterns effectively in any real-world Java project.