Dex files are used to package and distribute Android applications. Here's a concise explanation of their purpose and usage:
Dex (Dalvik Executable) files contain the compiled bytecode of an Android app that can be executed by the Android Runtime (ART). When an Android app is compiled, the Java source code is first translated into Java bytecode class files. These class files are then converted into a single optimized dex file using the dx tool[1][3].
The dex file is the final executable format that gets packaged into the APK (Android Application Package) file, which is the distribution format for Android apps[3][4]. The APK is essentially a zip archive containing the dex file along with other resources like images, layouts, etc. needed by the app.
Dex files are designed to be compact and efficien...
