JVM is a software-based machine that is used to run Java programs. It can be installed in any operating system such as Windows , OS X, and Linux .
JVMs allow Java apps to be run in almost all computers .
JVM’s full form is ” Java Virtual Machine .” This is a machine that processes instructions that are just like a physical processor.
But in this, Java code has to be converted first from a .JAVA file in instructions which JVM can understand. This binary format, called “bytecode”, can be processed in one instruction at a time or compiled into a .CLASS file before execution, so that performance can be improved .
While Java apps are completely platform independent (meaning they can be run on any platform), not all Java programs are compatible with all Java virtual machines.
JVMs are periodically updated for new instructions with new features and support. At the same time, Java often needs a minimum JVM version so that it can run.