What is the significance of the .dex file?

1.	What is the significance of the .dex file?
Answer» Android programs are compiled into a .dex file (Dalvik Executable file) by DVM, which are then zipped into a .apk file on the DEVICE. .dex files are CREATED by translating compiled applications written in java. .dex is a format that is optimized for EFFECTIVE storage and memory-mappable EXECUTIONS.

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