Java virtual machine (JVM)

What is the JVM?  Introducing the Java Virtual Machine: The JVM manages system memory and provides a portable execution environment for Java-based applications. The Java Virtual Machine is a program whose purpose is to execute other programs. It's a simple idea that also stands as one of our greatest examples of coding What the JVM is used for The JVM has two primary functions:  to allow Java programs to run on any device or operating system (known as the "Write once, run anywhere" principle), and to manage and optimiz e program memory. Having a technical definition for the JVM is useful, and there's also an everyday way that software developers think about it. Let's break those down: Technical definition: The JVM is the specification for a software program that executes code and provides the runtime environment for that code. Everyday definition: The JVM is how we run our Java programs. We configure the JVM's settings and then rely on it to manage program res...