If you used the build process in the downloaded code examples, the class files are written to the build directory (using scalac -d build...).

如果你使用了下载的代码示例中的编译过程，那些class文件会被写到build目录中区(使用scalac - d build…)。

youdao

Just as you'd expect, apps can be downloaded to specific users, keeping each account completely unique -- but if another user wants the same app, it's easy enough to just install it, since it's technically already on the tablet.

ENGADGET: Google Nexus 10 hands-on (video) Mobile