Java 8 Functional Interfaces Explained | @FunctionalInterface, Lambda & Real Examples
Learn Functional Interfaces in Java 8 with simple explanations and practical examples! 🚀
In this video, you'll learn one of the most important Java 8 features—Functional Interfaces. We'll understand what a Functional Interface is, how the @FunctionalInterface annotation works, and how to use Functional Interfaces as references for Lambda Expressions.
📚 What you'll learn:
What is a Functional Interface?
Rules of a Functional Interface
@FunctionalInterface Annotation
Using Lambda Expressions with Functional Interfaces
Storing Lambda Expressions in Functional Interface references
Why Functional Interfaces are important
Real-world use cases
Common Java interview questions
💼 Real-World Usage
Functional Interfaces are widely used in:
Stream API
Collections Framework
Comparator
ExecutorService
Spring Boot Applications
CompletableFuture
Event Handling
Functional Programming
Whether you're preparing for Java interviews, learning Spring Boot, or improving your Java skills, this video will help you build a strong foundation in Functional Interfaces.
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