crossoverJie/JCSprout ? reverse-engineered prompt

Build me a Java learning project that feels like a clean study guide and example repo in one place.

I want it to cover the core stuff people actually ask about, like collections, multithreading, JVM basics, common algorithms, database tips, and a little Netty and distributed systems. For each topic, include short explanations and simple Java examples that are easy to run and understand, like linked list tricks, two sum, thread pool examples, synchronized and lock behavior, memory and GC notes, and a few practical cases like rate limiting or consistent hashing.

Make it organized so someone can browse it like a handbook, with a readable home page, topic sections, and links to the detailed articles or code samples. Keep the code beginner friendly, and if you need to check current docs online, go ahead.