Topic Preview • Enroll to Read Full Lesson
5.2 Stream Transformations: map vs flatMap
Topic Summary
Understand when to use 1-to-1 map transformations vs 1-to-many flatMap flattening.
What You Will Learn
• Contrast `map` (1-to-1) and `flatMap` (1-to-many flattening).
• Flatten nested lists into a single continuous stream.
• Transform complex entity graphs without nested loops.
Included in Java Intermediate: Collections, Streams & Modern OOP • Lifetime access for ₹99