Every Java developer knows that bytecode will be executed by the JRE (Java Runtime Environment). But many don't know the fact that JRE is the implementation of Java Virtual Machine (JVM), which analyzes the bytecode, interprets the code, and executes it. It is very important, as a developer, that we know the architecture of the JVM, as it enables us to write code more efficiently. In this article, we will learn more deeply about the JVM architecture in Java and different components of the JVM.
What Is the JVM?
A Virtual Machine is a software implementation of a physical machine. Java was developed with the concept of WORA (Write Once Run Anywhere), which runs on a VM. The compiler compiles the Java file into a Java .class file, then that .class file is input into the JVM, which loads and executes the class file. Below is a diagram of the Architecture of the JVM.