Explain About JVM?

All language compilers translate source code into machine code for a specific computer.

Java complier also does the same thing.

Java complier produces an intermediate code thrown as byte code for a machine that does not exist.

This machine is called the java virtual machine and it exists only inside the computer memory. The virtual machine code is not machine specific code. The machine specific code is generated by the Java interpreter by acting as an intermediary between the virtual machine is the real machine.