Discovering the Power of Type-Safe Java Development
Start from a familiar legacy snippet: List inventory = new ArrayList();. It compiles, ships, and eventually bites back with ClassCastException. The fix is not a one‑off cast; it’s a mindset: design APIs that express intent through types and let the compiler enforce correctness.
Generics have been in Java for years, but deep fluency—wildcards, vari...
[Read More]
Module 4: Modern Java - Advanced Language Features
🎯 Learning Objectives
By the end of this module, you will:
Master Java Generics from basics to advanced patterns using @128-java-generics
Apply functional programming techniques effectively using @142-java-functional-programming
Implement functional exception handling with monads using @143-java-functional-exception-handling
Leverage data-oriented programming with records and sealed types using @...
[Read More]
Mastering Java Generics - From Type Safety to Advanced Patterns
Course Overview
Transform your Java development skills with this comprehensive course on generics - one of Java's most powerful yet misunderstood features. This course takes you from basic type safety concepts to advanced patterns used in production systems.
🎯 Learning Objectives
By the end of this course, you will be able to:
Eliminate ClassCastException through proper generic type usage
Design ...
[Read More]
Module 5: Assessment - Validate Your Mastery
📖 Module Overview
Congratulations on reaching the final module! It's time to validate your Java Generics mastery through comprehensive challenges and code reviews. This module ensures you can apply generics effectively in real-world scenarios.
🎯 Learning Objectives
By the end of this module, you will have:
Demonstrated comprehensive understanding through coding challenges
Applied all generics co...
[Read More]
Module 4: Real-World Applications - Production Patterns and Integration
📖 Module Overview
Time to apply your generics mastery to real-world scenarios! This module bridges theory and practice, showing how generics integrate with modern Java features and solve actual production problems. You'll work with contemporary patterns used in enterprise applications.
🎯 Learning Objectives
By the end of this module, you will:
Integrate generics with Records and sealed types
Han...
[Read More]
Module 3: Advanced Patterns - Type Erasure and Complex Patterns
📖 Module Overview
Welcome to the deep end of Java Generics! This module covers the most sophisticated patterns and edge cases that separate novice from expert generic programming. You'll understand how generics really work under the hood and master patterns used in production frameworks.
🎯 Learning Objectives
By the end of this module, you will:
Understand type erasure and its runtime implicatio...
[Read More]
Module 2: Wildcards & PECS - Variance and Flexible APIs
📖 Module Overview
Welcome to the most powerful aspect of Java Generics! In this module, you'll master wildcards and the PECS principle to create flexible, reusable APIs that work with families of related types. This is where generics truly shine in real-world applications.
🎯 Learning Objectives
By the end of this module, you will:
Understand covariance, contravariance, and invariance in Java
Mas...
[Read More]
Module 1: Foundations - Core Concepts and Type Safety
📖 Module Overview
Welcome to the foundation of Java Generics! In this module, you'll discover why generics were introduced, understand the problems they solve, and learn the fundamental syntax that makes Java code safer and more expressive.
🎯 Learning Objectives
By the end of this module, you will:
Understand the core problems that generics solve
Eliminate raw types from your code completely
App...
[Read More]