JVM AND ITS ARCHITECTURE:

It is a part of jre and provides runtime environment to drive java code or application. It converts bytecode into machine executable code.

Java compiler generates code for a virtual machine known as Java virtual machine.

Architecture:

Class-loader:

It is used for loading class files and performing three major functions-loading, linking and initialization.

Method area:

It stores structure of class and methods.

Heap:

The object, instance variables, and arrays are stored in it. this memory is shared by threads. ..

JVM language stack:

It stores the local variable and its partial results.

Pc registers:

It stores the currently executing machine instruction.

Native method stack:

It stores the instruction of native code.it is written in another language.

Execution engine:

It is a type of software used to test the complete system.

Native method interface:

It allows Java code which is running in a JVM to call by libraries and native applications.

Native method library:

Native Library is a collection of the Libraries which are needed by the Execution Engine.