YCBlogs

YCBlogs is a large Chinese-language technical knowledge repository containing years of software-development notes and reference material. Its Java section covers fundamentals, object-oriented programming, data structures, I/O, concurrency, reflection, virtual machines, exceptions, annotations, and advanced language topics. Extensive Android material explores components, IPC, views, multimedia, threading, WebView, networking, architecture, performance, RecyclerView, Kotlin, and framework design. Additional sections cover algorithms, design patterns, Flutter, Git, networking protocols, and open-source project recommendations. The repository also documents real development bugs, including their symptoms, analysis, and solutions. Large collections of technical questions make it useful for review and interview preparation. Most content is stored as Markdown, allowing the collection to function as a searchable long-term engineering notebook.