The name of android‘s virtual machine. The Dalvik VM is an interpreter-only virtual

machine that executes files in the Dalvik Executable (.dex) format, a format that is

optimized for efficient storage and memory-mappable execution. The virtual machine is

register-based, and it can run classes compiled by a Java language compiler that have been

transformed into its native format using the included ―dx‖ tool. The VM runs on top of

Posix-compliant operating systems, which it relies on for underlying functionality (such as

threading and low level memory management). The Dalvik core class library is intended to

provide a familiar development base for those used to programming with Java Standard

Edition, but it is geared specifically to the needs of a small mobile device.