<h1 id="heading-introduction">Introduction</h1>
<ul>
<li>Java is one of the most popular programming languages because it is used in a variety of technical fields such as app development, web development, client-server applications, and so on.</li>
<li>Java is an object-oriented programming language.</li>
</ul>
<hr />
<h1 id="heading-how-java-works">How Java Works?</h1>
<p>The source code in Java is first compiled into the byte code, and then it is interpreted to machine code.</p>
<p><img src="https://cwh-full-next-space.fra1.digitaloceanspaces.com/videos/java-tutorials-for-beginners-1/Img_1.png" alt /></p>
<ul>
<li>source code -&gt; <code>.java</code> file (human readable)</li>
<li>byte code -&gt; <code>.class</code> file</li>
<li><p>machine code -&gt; 0 and 1</p>
</li>
<li><p>compiler compiled the entire file.</p>
</li>
<li>interpreter interpreted the file (line by line).</li>
</ul>
<hr />
<ul>
<li><strong>JVM</strong> - Java Virtual Machine = It is a Virtual machine that enables a computer to run Java programs.</li>
<li><strong>JDK</strong> – Java Development Kit = Collection of tools used for developing and running java programs.</li>
<li><strong>JRE</strong> – Java Runtime Environment = Helps in executing programs developed in JAVA.</li>
<li>JDK contains Java Virtual Machine (JVM) and Java Runtime Environment (JRE).</li>
</ul>
<hr />
<h1 id="heading-installation">Installation</h1>
<ul>
<li><strong>JDK</strong> - <a target="_blank" href="https://www.oracle.com/java/technologies/downloads/#java16">DOWNLOAD HERE</a></li>
<li><strong>IntelliJ IDEA</strong> - <a target="_blank" href="https://www.jetbrains.com/idea/download/#section=windows">DOWNLOAD HERE</a></li>
</ul>
<hr />
<div class="embed-wrapper"><div class="embed-loading"><div class="loadingRow"></div><div class="loadingRow"></div></div><a class="embed-card" href="https://youtu.be/UZUVXqGPISY">https://youtu.be/UZUVXqGPISY</a></div>


# Introduction

- Java is one of the most popular programming languages because it is used in a variety of technical fields such as app development, web development, client-server applications, and so on.
- Java is an object-oriented programming language.

---

# How Java Works?

The source code in Java is first compiled into the byte code, and then it is interpreted to machine code.

![](https://cwh-full-next-space.fra1.digitaloceanspaces.com/videos/java-tutorials-for-beginners-1/Img_1.png)

- source code -> `.java` file (human readable)
- byte code -> `.class` file
- machine code -> 0 and 1

- compiler compiled the entire file.
- interpreter interpreted the file (line by line).

---

- **JVM** - Java Virtual Machine = It is a Virtual machine that enables a computer to run Java programs.
- **JDK** – Java Development Kit = Collection of tools used for developing and running java programs.
- **JRE** – Java Runtime Environment = Helps in executing programs developed in JAVA.
- JDK contains Java Virtual Machine (JVM) and Java Runtime Environment (JRE).

---

# Installation

- **JDK** - [DOWNLOAD HERE](https://www.oracle.com/java/technologies/downloads/#java16)
- **IntelliJ IDEA** - [DOWNLOAD HERE](https://www.jetbrains.com/idea/download/#section=windows)

---

%[https://youtu.be/UZUVXqGPISY]



Introduction to Java - DSAasaanhai

Table of contents

Introduction

How Java Works?

Installation