04 — Reference (Deep Dives)

Part of: docs/00-INDEX.md

Use these after the matching 02-learn chapter — not as your first read.

#	File	Learn chapter
01	Java Versions	21
02	JVM Internals	25
03	Design Patterns	27
04	I/O	28
05	Networking	29
06	JDBC	30
07	REST APIs	31
08	Libraries	32
09	Testing	33
10	Modules	34
11	Memory Model	26
12	Serialization	35
13	Build Tools	36
14	LeetCode	24

Interview Q&A on same topics → 03-interview/00-INDEX.md