Inside Lombok: Compiler Internals, Pros & Cons Explained ✅ | Part 2

What really happens when you write @Getter or @Builder in your code?
Where does the code come from — and why do some teams say Lombok is “heavy”?

In Part 2 of this Lombok deep-dive series, we go inside Lombok and explain how it works at the compiler level, not just how to use it.

In this video, you’ll learn:
How Lombok integrates with the Java compiler
What JSR-269 annotation processing is
What an AST (Abstract Syntax Tree) is and why it matters
How Lombok modifies the AST during compilation
Why Lombok has zero runtime overhead
The real pros and cons of Lombok
Why some teams avoid Lombok and call it “heavy”
When Lombok is a great choice — and when it’s not

This video is perfect for intermediate to advanced Java developers who want to understand Lombok beyond surface-level usage and make informed architectural decisions.

Git Repo - https://github.com/codesnippetjava/lombok-demo

Chapters:
0:00 - Introduction & Agenda
1:58 - Java Code To ByteCode Class
3:12 - Java To ByteCode Internals
4:25 - Abstract Syntax Tree (AST)
5:20 - JSR-269 Annotation Processor
6:28 - Lombok With AST And JSR
10:00 - Lombok Pros & Cons
15:20 - Is Lombok Heavy?
17:10 - Glance Of Record
18:20 - Outro

🏷️ Tags
java,lombok,project lombok,lombok internals,lombok compiler internals,
jsr 269,annotation processing java,java ast,abstract syntax tree java,
how lombok works,lombok pros and cons,lombok heavy,
java compiler internals,javac internals,
spring boot lombok,advanced java,java backend,
java developer,software engineering,clean code java

🔖 Hashtags
#Java #Lombok #SpringBoot #JavaDeveloper #CompilerInternals
#JSR269 #AST #BackendDevelopment #SoftwareEngineering
#CleanCode #Programming #AdvancedJava

Видео Inside Lombok: Compiler Internals, Pros & Cons Explained ✅ | Part 2 канала CodeSnippet