APKPure Appを使用する
Java languageの旧いバージョンをダウンロードすることが可能
Javaプログラミング言語
This Java Language trail (set of articles) describes the Java programming language. The intention of this tutorial is mostly to be a compressed introduction to Java for developers who already know a bit about programming and object oriented concepts. I will try to explain the various different concepts as I use them, but a bit of programming background will helpful.