The JRE includes JVM (Java Virtual Machine) that runs Java programs by translating from bytecode to platform-dependent code and executes them (Java programs are compiled into an intermediate form called bytecode), and other core libraries such as collections, File I/O, networking, etc.

JRE (Java Runtime Environment): is the core of the Java platform that enables running Java programs on your computer.

Download and install Java Development KitIn order to write and run a Java program, you need to install a software program called Java SE Development Kit (or JDK for short, and SE means Standard Edition).

NOTES: This beginner tutorial is targeted for Windows environment.

Throughout this tutorial, you will learn fundamental concepts and steps which are necessary for every Java fresher.To start, all you need is a fresh computer without any Java software installed, a text-based editor and a good internet connection. This tutorial will help you writing your first Java program, typically a “hello world” one - your first step of the adventure into Java programming world. If you are new to Java programming and wish to learn it right now by doing some hands-on practice, you have come to the right place.

Notepad++ compile java