Difference between JVM(Java Virtual Machine) and DVM(Dalvik Virtual Machine)

 

Dalvik Virtual Machine

What is DVM

Difference between DVM and JVM

	DVM (Dalvik Virtual Machine)	JVM (Java Virtual Machine)
1	It is Register based which is designed to run on low memory.	It is Stack based.
2	DVM uses its own byte code and runs the “.Dex” file. From Android 2.2 SDK Dalvik has got a Just in Time compiler	JVM uses java byte code and runs “.class” file having JIT (Just In Time).
3	DVM has been designed so that a device can run multiple instances of the VM efficiently. Applications are given their own instance.	A single instance of JVM is shared with multiple applications.
4	DVM supports the Android operating system only.	JVM supports multiple operating systems.
5	For DVM very few Re-tools are available	For JVM many Re-tools are available.
6	There is a constant pool for every application.	It has a constant pool for every class.
7	Here the executable is APK.	Here the executable is JAR.