I bought 3 baby puffer fish and they don&#39;t seem to be eating pellets, flakes or bloodworms.
Apk is the android package. R.java (auto generated file) when compiled along with .class (java classes) generated .dex file but these files are not deployable. .dex files are then reprocessed along with manifest file, and other resources (mp3, video, image) and .apk file is generated. This file is deployable.
.apk extension stands for android package file. It is a file format used to distribute and install applications.It includes the programm codes ,assets ,resourses ,certificates and manifest file. .Dex extensions stands for Dalvix Executable files.