Stop Misusing .map() in Java Streams! 🔥 Use .peek() Instead | SonarLint Warning
🧠 Confused by the SonarLint warning about using .map() instead of .peek()?
This video breaks it down in the simplest terms possible — perfect for beginners and pros alike. We’ll walk through why .map() should only be used for transformations, when .peek() is the correct tool for side effects, and how to avoid common stream mistakes in Java.
👨💻 What you’ll learn:
What .map() really does
What SonarLint is warning you about
How .peek() fixes side-effect misuse
Real-world beginner-friendly examples
0:00 – Intro
0:30 – What is .map()
1:00 – Example
1:30 – The mistake
2:00 – Demo
3:15 – Use .peek()
3:50 – Real use cases
4:10 – Summary
4:30 – Outro
📚 Perfect for Java 8 through Java 17.
🎯 Whether you’re learning Java or reviewing clean code principles, this is for you!
voice generated by elevenlabs.io
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