Merge Multiple Lists into One using Java 8 flatMap | Stream API Tutorial
🎯 Description:
Learn how to merge multiple lists into a single list in Java using the powerful flatMap() method from the Stream API. This concise Java 8 tutorial is perfect for beginners and experienced developers preparing for coding interviews or looking to master Java functional programming.
✅ Topics Covered:
Stream API basics
What is flatMap()?
Combining multiple lists into one
Real-world example for interviews
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