Contexts and Dependency Injection: Java CDI Fundamentals

Modern enterprise Java development relies heavily on loose coupling, but relying on proprietary frameworks can limit your application's portability. Understanding standard Contexts and Dependency Injection (CDI) allows you to build highly modular, testable, and maintainable applications using industry-standard specifications. This text-based course guides you through the transition from Spring-specific annotations to standard CDI alternatives, helping you write cleaner, framework-independent Java code. You will start by mastering the core principles of dependency injection, scope management, and context lifecycles. Through clear explanations and practical code examples, you will learn how to configure beans, manage application state, and decouple your software components effectively. What you'll learn: - Understand the core concepts of dependency injection and the CDI bean lifecycle - Map familiar Spring annotations directly to their standard CDI equivalents - Configure different bean scopes including request, session, and application scopes - Implement type-safe dependency injection using qualifiers and producers - Decouple application components using CDI events and observers - Apply modern best practices for testing CDI beans using lightweight containers This course begins with foundational definitions and architectural concepts before moving into practical migration strategies and code patterns. You will compare Spring and CDI side-by-side to ensure a smooth transition of your skills. This course is designed for beginner to intermediate Java developers who want to learn standard dependency injection or transition away from proprietary frameworks. No prior experience with CDI is required, though a basic understanding of Java and general programming concepts is recommended. Start reading today to build more portable and modular enterprise Java applications.