Java 8 functional programming - Predicate Functional Interface | Real World Examples | Part 2
Welcome to Part 2 of the Functional Interface & Lambda Expressions Series!
In this video, we dive deep into the Predicate Functional Interface, one of the most important functional interfaces introduced in Java 8.
A Predicate is used to test conditions and return a boolean result. It is heavily used in filtering, validation, authorization, eligibility checks, business rule engines, Stream API operations, and real-world enterprise applications.
📚 Topics Covered:
✔ What is Predicate?
✔ Functional Interface Overview
✔ test Method Explained
✔ Predicate with Lambda Expressions
✔ Filtering Data using Predicate
✔ Predicate Chaining
✔ and Method
✔ or Method
✔ negate() Method
✔ Real-World Validation Examples
✔ Business Rule Engine Examples
✔ Predicate with Stream API
✔ Interview Questions & Answers
💻 Examples Covered:
✅ Check Even/Odd Numbers
✅ Check Positive Numbers
✅ Employee Salary Validation
✅ User Eligibility Validation
✅ Loan Approval Rule Engine
✅ Fraud Detection Rules
✅ Product Filtering
✅ Stream API Filtering
✅ Predicate Chaining Examples
🔥 Real-World Use Cases:
• Input Validation
• Authorization Rules
• Eligibility Checks
• Fraud Detection Systems
• Workflow Engines
• Rule Engines
• Search Filters
• Spring Boot Applications
🎯 Perfect For:
✔ Java Beginners
✔ Java Developers
✔ Spring Boot Developers
✔ Interview Preparation
✔ Backend Engineers
✔ Software Engineers
📌 Functional Interface Series:
Part 1 - Introduction to Functional Interfaces & Lambda Expressions
Part 2 - Predicate Functional Interface
Part 3 - Consumer Functional Interface
Part 4 - Function & Supplier Functional Interfaces
Part 5 - Method References
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