Java官方API中文版，对java学习很有好处，平时可以经常查阅-Chinese version of the official Java API for java learning is very good, usually you can always check

Java文档中文版，帮你更快速的学习常用JavaAPI，更好更快的构建软件。(The Chinese version of the Java document helps you learn more quickly about the common JavaAPI and build the software better and faster.)